private void GMT(TimeZone t1)
{
// Probably wont work on MS.NET, but is better than nothing. Where do
// we change our implementation to match theirs?
Assert.AreEqual("GMT", t1.StandardName, "D01");
Assert.IsTrue("BST" == t1.DaylightName || "IST" == t1.DaylightName, "D02");
DaylightTime d1 = t1.GetDaylightChanges(2002);
Assert.AreEqual("03/31/2002 01:00:00", d1.Start.ToString("G"), "D03");
Assert.AreEqual("10/27/2002 02:00:00", d1.End.ToString("G"), "D04");
Assert.AreEqual(36000000000L, d1.Delta.Ticks, "D05");
DaylightTime d2 = t1.GetDaylightChanges(1996);
Assert.AreEqual("03/31/1996 01:00:00", d2.Start.ToString("G"), "D06");
Assert.AreEqual("10/27/1996 02:00:00", d2.End.ToString("G"), "D07");
Assert.AreEqual(36000000000L, d2.Delta.Ticks, "D08");
DateTime d3 = new DateTime(2002, 2, 25);
Assert.AreEqual(false, t1.IsDaylightSavingTime(d3), "D09");
DateTime d4 = new DateTime(2002, 4, 2);
Assert.AreEqual(true, t1.IsDaylightSavingTime(d4), "D10");
DateTime d5 = new DateTime(2002, 11, 4);
Assert.AreEqual(false, t1.IsDaylightSavingTime(d5), "D11");
Assert.AreEqual(0L, t1.GetUtcOffset(d3).Ticks, "D12");
Assert.AreEqual(36000000000L, t1.GetUtcOffset(d4).Ticks, "D13");
Assert.AreEqual(0L, t1.GetUtcOffset(d5).Ticks, "D14");
}
private void EST(TimeZone t1)
{
// It could be EST though...
//Assert.AreEqual("Eastern Standard Time", t1.StandardName, "B01");
//Assert.AreEqual("Eastern Daylight Time", t1.DaylightName, "B02");
DaylightTime d1 = t1.GetDaylightChanges(2002);
Assert.AreEqual("04/07/2002 02:00:00", d1.Start.ToString("G"), "B03");
Assert.AreEqual("10/27/2002 02:00:00", d1.End.ToString("G"), "B04");
Assert.AreEqual(36000000000L, d1.Delta.Ticks, "B05");
DaylightTime d2 = t1.GetDaylightChanges(1996);
Assert.AreEqual("04/07/1996 02:00:00", d2.Start.ToString("G"), "B06");
Assert.AreEqual("10/27/1996 02:00:00", d2.End.ToString("G"), "B07");
Assert.AreEqual(36000000000L, d2.Delta.Ticks, "B08");
DateTime d3 = new DateTime(2002, 2, 25);
Assert.AreEqual(false, t1.IsDaylightSavingTime(d3), "B09");
DateTime d4 = new DateTime(2002, 4, 8);
Assert.AreEqual(true, t1.IsDaylightSavingTime(d4), "B10");
DateTime d5 = new DateTime(2002, 11, 4);
Assert.AreEqual(false, t1.IsDaylightSavingTime(d5), "B11");
Assert.AreEqual(-180000000000L, t1.GetUtcOffset(d3).Ticks, "B12");
Assert.AreEqual(-144000000000L, t1.GetUtcOffset(d4).Ticks, "B13");
Assert.AreEqual(-180000000000L, t1.GetUtcOffset(d5).Ticks, "B14");
}
private void EST(TimeZone t1)
{
Assert.IsTrue("EST" == t1.StandardName || "Eastern Standard Time" == t1.StandardName, "B01");
Assert.IsTrue("EDT" == t1.DaylightName || "Eastern Daylight Time" == t1.DaylightName, "B02");
DaylightTime d1 = t1.GetDaylightChanges(2002);
Assert.AreEqual(36000000000L, d1.Delta.Ticks, "B05");
DaylightTime d2 = t1.GetDaylightChanges(1996);
Assert.AreEqual(36000000000L, d2.Delta.Ticks, "B08");
DateTime d3 = new DateTime(2002, 2, 25);
Assert.AreEqual(false, t1.IsDaylightSavingTime(d3), "B09");
DateTime d4 = new DateTime(2002, 4, 8);
Assert.AreEqual(true, t1.IsDaylightSavingTime(d4), "B10");
DateTime d5 = new DateTime(2002, 11, 4);
Assert.AreEqual(false, t1.IsDaylightSavingTime(d5), "B11");
Assert.AreEqual(-180000000000L, t1.GetUtcOffset(d3).Ticks, "B12");
Assert.AreEqual(-144000000000L, t1.GetUtcOffset(d4).Ticks, "B13");
Assert.AreEqual(-180000000000L, t1.GetUtcOffset(d5).Ticks, "B14");
// Test TimeZone methods with UTC DateTime in DST.
DateTime d6 = d4.ToUniversalTime();
Assert.AreEqual(false, t1.IsDaylightSavingTime(d6), "B15");
Assert.AreEqual(0, t1.GetUtcOffset(d6).Ticks, "B16");
}
private void CET(TimeZone t1)
{
Assert.AreEqual("CET", t1.StandardName, "A01");
Assert.AreEqual("CEST", t1.DaylightName, "A02");
DaylightTime d1 = t1.GetDaylightChanges(2002);
Assert.AreEqual("03/31/2002 02:00:00", d1.Start.ToString("G"), "A03");
Assert.AreEqual("10/27/2002 03:00:00", d1.End.ToString("G"), "A04");
Assert.AreEqual(36000000000L, d1.Delta.Ticks, "A05");
DaylightTime d2 = t1.GetDaylightChanges(1996);
Assert.AreEqual("03/31/1996 02:00:00", d2.Start.ToString("G"), "A06");
Assert.AreEqual("10/27/1996 03:00:00", d2.End.ToString("G"), "A07");
Assert.AreEqual(36000000000L, d2.Delta.Ticks, "A08");
DateTime d3 = new DateTime(2002, 2, 25);
Assert.AreEqual(false, t1.IsDaylightSavingTime(d3), "A09");
DateTime d4 = new DateTime(2002, 4, 2);
Assert.AreEqual(true, t1.IsDaylightSavingTime(d4), "A10");
DateTime d5 = new DateTime(2002, 11, 4);
Assert.AreEqual(false, t1.IsDaylightSavingTime(d5), "A11");
Assert.AreEqual(36000000000L, t1.GetUtcOffset(d3).Ticks, "A12");
Assert.AreEqual(72000000000L, t1.GetUtcOffset(d4).Ticks, "A13");
Assert.AreEqual(36000000000L, t1.GetUtcOffset(d5).Ticks, "A14");
}
private void NZST(TimeZone t1)
{
Assert.AreEqual("NZST", t1.StandardName, "E01");
Assert.AreEqual("NZDT", t1.DaylightName, "E02");
DaylightTime d1 = t1.GetDaylightChanges(2013);
Assert.AreEqual("09/29/2013 02:00:00", d1.Start.ToString("G"), "E03");
Assert.AreEqual("04/07/2013 03:00:00", d1.End.ToString("G"), "E04");
Assert.AreEqual(36000000000L, d1.Delta.Ticks, "E05");
DaylightTime d2 = t1.GetDaylightChanges(2001);
Assert.AreEqual("10/07/2001 02:00:00", d2.Start.ToString("G"), "E06");
Assert.AreEqual("03/18/2001 03:00:00", d2.End.ToString("G"), "E07");
Assert.AreEqual(36000000000L, d2.Delta.Ticks, "E08");
DateTime d3 = new DateTime(2013, 02, 15);
Assert.AreEqual(true, t1.IsDaylightSavingTime(d3), "E09");
DateTime d4 = new DateTime(2013, 04, 30);
Assert.AreEqual(false, t1.IsDaylightSavingTime(d4), "E10");
DateTime d5 = new DateTime(2013, 11, 03);
Assert.AreEqual(true, t1.IsDaylightSavingTime(d5), "E11");
Assert.AreEqual(36000000000L /*hour*/ * 13L, t1.GetUtcOffset(d3).Ticks, "E12");
Assert.AreEqual(36000000000L /*hour*/ * 12L, t1.GetUtcOffset(d4).Ticks, "E13");
Assert.AreEqual(36000000000L /*hour*/ * 13L, t1.GetUtcOffset(d5).Ticks, "E14");
}
/// <summary>
/// Calculate the Chronological Modified Julian Date from the Julian Date
/// </summary>
/// <param name="julianDate">Julian Date</param>
/// <returns>Chronological Modified Julian Date</returns>
public static double CalculateChronologicalModifiedJulianDate(double julianDate)
{
TimeZone zone = TimeZone.CurrentTimeZone;
DaylightTime time = zone.GetDaylightChanges(year: DateTime.Today.Year);
return(julianDate - doubleModifiedJulianDateCoefficient + 0.5 + (time.Delta.Hours / 24.0));
}
/// <summary>
/// Calculate the Chronological Julian Date from the date
/// </summary>
/// <param name="date">date</param>
/// <returns>Chronological Julian Date</returns>
public static double CalculateChronologicalJulianDate(DateTime date)
{
TimeZone zone = TimeZone.CurrentTimeZone;
DaylightTime time = zone.GetDaylightChanges(year: DateTime.Today.Year);
return(CalculateJulianDate(date: date) + 0.5 + (time.Delta.Hours / 24.0));
}
public static void MakeNow(this IfcLocalTime lt)
{
DateTimeOffset localTime = DateTimeOffset.Now;
lt.HourComponent = localTime.Hour;
lt.SecondComponent = localTime.Second;
lt.MinuteComponent = localTime.Minute;
IfcCoordinatedUniversalTimeOffset coordinatedUniversalTimeOffset = lt.Model.Instances.New <IfcCoordinatedUniversalTimeOffset>();
coordinatedUniversalTimeOffset.HourOffset = new IfcHourInDay(localTime.Offset.Hours);
coordinatedUniversalTimeOffset.MinuteOffset = new IfcMinuteInHour(localTime.Offset.Minutes);
if (localTime.Offset.Hours < 0 || (localTime.Offset.Hours == 0 && localTime.Offset.Minutes < 0))
{
coordinatedUniversalTimeOffset.Sense = IfcAheadOrBehind.BEHIND;
}
else
{
coordinatedUniversalTimeOffset.Sense = IfcAheadOrBehind.AHEAD;
}
lt.Zone = coordinatedUniversalTimeOffset;
TimeZone tz = TimeZone.CurrentTimeZone;
DaylightTime dt = tz.GetDaylightChanges(localTime.Year);
lt.DaylightSavingOffset = dt.Delta.Hours;
}
/// <summary>
/// Calculate the Chronological Modified Julian Date
/// </summary>
/// <returns>Chronological Modified Julian Date</returns>
public static double CalculateChronologicalModifiedJulianDate()
{
TimeZone zone = TimeZone.CurrentTimeZone;
DaylightTime time = zone.GetDaylightChanges(year: DateTime.Today.Year);
//System.Windows.Forms.MessageBox.Show((time.Delta.Hours * (24 / 100)).ToString());
//double a = time.Delta.Hours / 24.0;
return(CalculateJulianDate() - doubleModifiedJulianDateCoefficient + 0.5 + (time.Delta.Hours / 24.0));
}
static void Main(string[] args)
{
const string dataFmt = "{0,-30}{1}";
const string timeFmt = "{0,-30}{1:yyyy-MM-dd HH:mm}";
Console.WriteLine(
"This example of selected TimeZone class " +
"elements generates the following \n" +
"output, which varies depending on the " +
"time zone in which it is run. \n");
//Get the local time zone and the current local time and year
TimeZone localZone = TimeZone.CurrentTimeZone;
DateTime currentDate = DateTime.Now;
int currentYear = currentDate.Year;
//Display the names for standard time and daylight saving
//time for the local time zone
Console.WriteLine(dataFmt, "Standard time name:",
localZone.StandardName);
Console.WriteLine(dataFmt, "Daylight saving time name:",
localZone.DaylightName);
// Display the current date and time and show if they occur
// in daylight saving time.
Console.WriteLine("\n" + timeFmt, "Current date and time:",
currentDate);
Console.WriteLine(dataFmt, "Daylight saving time?",
localZone.IsDaylightSavingTime(currentDate));
// Get the current Coordinated Universal Time (UTC) and UTC
// offset.
DateTime currentUTC =
localZone.ToUniversalTime(currentDate);
TimeSpan currentOffset =
localZone.GetUtcOffset(currentDate);
Console.WriteLine(timeFmt, "Coordinated Universal Time:",
currentUTC);
Console.WriteLine(dataFmt, "UTC offset:", currentOffset);
// Get the DaylightTime object for the current year.
DaylightTime daylight =
localZone.GetDaylightChanges(currentYear);
// Display the daylight saving time range for the current year.
Console.WriteLine(
"\nDaylight saving time for year {0}:", currentYear);
Console.WriteLine("{0:yyyy-MM-dd HH:mm} to " +
"{1:yyyy-MM-dd HH:mm}, delta: {2}",
daylight.Start, daylight.End, daylight.Delta);
}
private int ConvertToTimestamp(DateTime value)
{
TimeZoneInfo NYTimeZone = TimeZoneInfo.FindSystemTimeZoneById("Central European Standard Time");
DateTime NyTime = TimeZoneInfo.ConvertTime(value, NYTimeZone);
TimeZone localZone = TimeZone.CurrentTimeZone;
System.Globalization.DaylightTime dst = localZone.GetDaylightChanges(NyTime.Year);
NyTime = NyTime.AddHours(-1);
DateTime epoch = new DateTime(1970, 1, 1, 0, 0, 0, 0).ToLocalTime();
TimeSpan span = (NyTime - epoch);
return((int)Convert.ToDouble(span.TotalSeconds));
}
public static long ConvertToTimestamp(DateTime value)
{
TimeZoneInfo NYTimeZone = TimeZoneInfo.FindSystemTimeZoneById("SE Asia Standard Time"); // (GMT+07:00) Bangkok, Hanoi, Jakarta
DateTime NyTime = TimeZoneInfo.ConvertTime(value, NYTimeZone);
TimeZone localZone = TimeZone.CurrentTimeZone;
System.Globalization.DaylightTime dst = localZone.GetDaylightChanges(NyTime.Year);
NyTime = NyTime.AddHours(-1);
DateTime epoch = new DateTime(1970, 1, 1, 0, 0, 0, 0).ToLocalTime();
TimeSpan span = (NyTime - epoch);
return((long)Convert.ToDouble(span.TotalSeconds));
}
private void EST(TimeZone t1)
{
Assert.IsTrue("EST" == t1.StandardName || "Eastern Standard Time" == t1.StandardName, "B01");
Assert.IsTrue("EDT" == t1.DaylightName || "Eastern Daylight Time" == t1.DaylightName, "B02");
DaylightTime d1 = t1.GetDaylightChanges(2002);
Assert.AreEqual("04/07/2002 02:00:00", d1.Start.ToString("G", CultureInfo.InvariantCulture), "B03");
Assert.AreEqual("10/27/2002 02:00:00", d1.End.ToString("G", CultureInfo.InvariantCulture), "B04");
Assert.AreEqual(36000000000L, d1.Delta.Ticks, "B05");
DaylightTime d2 = t1.GetDaylightChanges(1996);
Assert.AreEqual("03/31/1996 02:00:00", d2.Start.ToString("G", CultureInfo.InvariantCulture), "B06");
Assert.AreEqual("10/27/1996 03:00:00", d2.End.ToString("G", CultureInfo.InvariantCulture), "B07");
Assert.AreEqual(36000000000L, d2.Delta.Ticks, "B08");
DateTime d3 = new DateTime(2002, 2, 25);
Assert.AreEqual(false, t1.IsDaylightSavingTime(d3), "B09");
DateTime d4 = new DateTime(2002, 4, 8);
Assert.AreEqual(true, t1.IsDaylightSavingTime(d4), "B10");
DateTime d5 = new DateTime(2002, 11, 4);
Assert.AreEqual(false, t1.IsDaylightSavingTime(d5), "B11");
Assert.AreEqual(-180000000000L, t1.GetUtcOffset(d3).Ticks, "B12");
Assert.AreEqual(-144000000000L, t1.GetUtcOffset(d4).Ticks, "B13");
Assert.AreEqual(-180000000000L, t1.GetUtcOffset(d5).Ticks, "B14");
// Test TimeZone methods with UTC DateTime in DST.
DateTime d6 = d4.ToUniversalTime();
Assert.AreEqual(false, t1.IsDaylightSavingTime(d6), "B15");
Assert.AreEqual(0, t1.GetUtcOffset(d6).Ticks, "B16");
}
private void CET(TimeZone t1)
{
Assert.IsTrue("CET" == t1.StandardName || "W. Europe Standard Time" == t1.StandardName, "A01");
Assert.IsTrue("CEST" == t1.DaylightName || "W. Europe Daylight Time" == t1.DaylightName, "A02");
DaylightTime d1 = t1.GetDaylightChanges(2002);
Assert.AreEqual("03/31/2002 02:00:00", d1.Start.ToString("G", CultureInfo.InvariantCulture), "A03");
Assert.AreEqual("10/27/2002 03:00:00", d1.End.ToString("G", CultureInfo.InvariantCulture), "A04");
Assert.AreEqual(36000000000L, d1.Delta.Ticks, "A05");
DaylightTime d2 = t1.GetDaylightChanges(1996);
Assert.AreEqual("03/31/1996 02:00:00", d2.Start.ToString("G", CultureInfo.InvariantCulture), "A06");
Assert.AreEqual("10/27/1996 03:00:00", d2.End.ToString("G", CultureInfo.InvariantCulture), "A07");
Assert.AreEqual(36000000000L, d2.Delta.Ticks, "A08");
DateTime d3 = new DateTime(2002, 2, 25);
Assert.AreEqual(false, t1.IsDaylightSavingTime(d3), "A09");
DateTime d4 = new DateTime(2002, 4, 2);
Assert.AreEqual(true, t1.IsDaylightSavingTime(d4), "A10");
DateTime d5 = new DateTime(2002, 11, 4);
Assert.AreEqual(false, t1.IsDaylightSavingTime(d5), "A11");
Assert.AreEqual(36000000000L, t1.GetUtcOffset(d3).Ticks, "A12");
Assert.AreEqual(72000000000L, t1.GetUtcOffset(d4).Ticks, "A13");
Assert.AreEqual(36000000000L, t1.GetUtcOffset(d5).Ticks, "A14");
// Test TimeZone methods with UTC DateTime in DST.
DateTime d6 = d4.ToUniversalTime();
Assert.AreEqual(false, t1.IsDaylightSavingTime(d6), "A15");
Assert.AreEqual(0, t1.GetUtcOffset(d6).Ticks, "A16");
}
private void NZST(TimeZone t1)
{
Assert.AreEqual("NZST", t1.StandardName, "E01");
Assert.AreEqual("NZDT", t1.DaylightName, "E02");
DaylightTime d1 = t1.GetDaylightChanges(2013);
Assert.AreEqual("09/29/2013 02:00:00", d1.Start.ToString("G", CultureInfo.InvariantCulture), "E03");
Assert.AreEqual("04/07/2013 03:00:00", d1.End.ToString("G", CultureInfo.InvariantCulture), "E04");
Assert.AreEqual(36000000000L, d1.Delta.Ticks, "E05");
DaylightTime d2 = t1.GetDaylightChanges(2001);
Assert.AreEqual("10/07/2001 02:00:00", d2.Start.ToString("G", CultureInfo.InvariantCulture), "E06");
Assert.AreEqual("03/18/2001 03:00:00", d2.End.ToString("G", CultureInfo.InvariantCulture), "E07");
Assert.AreEqual(36000000000L, d2.Delta.Ticks, "E08");
DateTime d3 = new DateTime(2013, 02, 15);
Assert.AreEqual(true, t1.IsDaylightSavingTime(d3), "E09");
DateTime d4 = new DateTime(2013, 04, 30);
Assert.AreEqual(false, t1.IsDaylightSavingTime(d4), "E10");
DateTime d5 = new DateTime(2013, 11, 03);
Assert.AreEqual(true, t1.IsDaylightSavingTime(d5), "E11");
Assert.AreEqual(36000000000L /*hour*/ * 13L, t1.GetUtcOffset(d3).Ticks, "E12");
Assert.AreEqual(36000000000L /*hour*/ * 12L, t1.GetUtcOffset(d4).Ticks, "E13");
Assert.AreEqual(36000000000L /*hour*/ * 13L, t1.GetUtcOffset(d5).Ticks, "E14");
// Test TimeZone methods with UTC DateTime in DST.
DateTime d6 = d5.ToUniversalTime();
Assert.AreEqual(false, t1.IsDaylightSavingTime(d6), "E15");
Assert.AreEqual(0, t1.GetUtcOffset(d6).Ticks, "E16");
}
public void ToLocalTimeAtDSTBoundaries()
{
TimeZone tz = TimeZone.CurrentTimeZone;
DateTime dst_start_utc = tz.GetDaylightChanges(2007).Start.ToUniversalTime();
if (dst_start_utc == DateTime.MinValue)
{
Assert.Ignore("Couldn't get beginning of daylight saving time in 2007.");
}
Assert.IsTrue(tz.ToLocalTime(dst_start_utc.Subtract(new TimeSpan(0, 1, 0))) < tz.ToLocalTime(dst_start_utc), "0:1:59 < 0:3:00");
Assert.IsTrue(tz.ToLocalTime(dst_start_utc) < tz.ToLocalTime(dst_start_utc.Add(new TimeSpan(0, 1, 0))), "0:3:00 < 0:3:01");
Assert.IsTrue(tz.ToLocalTime(dst_start_utc.Add(new TimeSpan(0, 1, 0))) < tz.ToLocalTime(dst_start_utc.Add(new TimeSpan(0, 59, 0))), "0:3:01 < 0:3:59");
Assert.IsTrue(tz.ToLocalTime(dst_start_utc.Add(new TimeSpan(0, 59, 0))) < tz.ToLocalTime(dst_start_utc.Add(new TimeSpan(1, 0, 0))), "0:3:59 < 0:4:00");
Assert.IsTrue(tz.ToLocalTime(dst_start_utc.Add(new TimeSpan(1, 0, 0))) < tz.ToLocalTime(dst_start_utc.Add(new TimeSpan(1, 1, 0))), "0:4:00 < 0:4:01");
}
public static DateTime GetDateTime(DateTime dt, string timeZone = "")
{
if (!String.IsNullOrEmpty(timeZone))
{
TimeZoneInfo timeInfo = TimeZoneInfo.FindSystemTimeZoneById(timeZone);
dt = TimeZoneInfo.ConvertTimeFromUtc(dt, timeInfo);
}
else
{
TimeZone localZone = TimeZone.CurrentTimeZone;
TimeSpan currentOffset = localZone.GetUtcOffset(dt);
DaylightTime daylight = localZone.GetDaylightChanges(dt.Year);
dt = dt.Add(currentOffset);
}
return(dt);
}
private void WorkOutTime()
{
Invoke(new Action(() =>
{
// Get DaylightTime object
System.Globalization.DaylightTime dl = curTimeZone.GetDaylightChanges(DateTime.Now.Year);
// What is GMT (also called Coordinated Universal Time (UTC)
DateTime curUTC = curTimeZone.ToUniversalTime(DateTime.Now);
// What is GMT/UTC offset ?
TimeSpan currentOffset = curTimeZone.GetUtcOffset(DateTime.Now);
//----------------------------------------------------------------
lbl_local_tz.Text = TimeZoneInfo.Local.DisplayName;
// Difference between standard time and the daylight-saving time.
TimeZoneInfo localZone = TimeZoneInfo.Local;
string answer = (localZone.BaseUtcOffset >= TimeSpan.Zero) ? "later" : "earlier";
lbl_time_info.Text = "Local time now is " + dl.Delta + " (hh:mm:ss) " + answer + " than UTC.";
lbl_UTC.Text = curUTC.ToString();
lbl_local_time.Text = DateTime.Now.ToString();
lbl_utc_offset.Text = currentOffset.ToString();
lbl_DST_setting.Text = curTimeZone.IsDaylightSavingTime(DateTime.Now) ? "On" : "Off";
lbl_dst_start.Text = dl.Start.ToString();
lbl_dst_ends.Text = dl.End.ToString();
lbl_timezone_name.Text = curTimeZone.StandardName;
lbl_daylight_name.Text = curTimeZone.DaylightName;
//---------------------------------------------------------------------------
DateTime timeUtc = curTimeZone.ToUniversalTime(DateTime.Now);
var dt = DateTime.SpecifyKind(timeUtc, DateTimeKind.Utc);
//TimeZoneInfo cstZone = TimeZoneInfo.FindSystemTimeZoneById("Eastern Standard Time");
TimeZoneInfo tZone = TimeZoneInfo.FindSystemTimeZoneById(cmbobx_tzones.SelectedItem.ToString());
DateTime TheTime = TimeZoneInfo.ConvertTimeFromUtc(dt, tZone);
lbl_time_in_tz.Text = TheTime.ToString();
}));
}
private static void Main()
{
Action <string> display = Console.WriteLine;
display("Time Zone");
TimeZoneInfo tzi = TimeZoneInfo.Local;
display($"time zone Info standard name is {tzi.StandardName}");
display($"time zone Info ID is {tzi.Id}");
display($"{TimeZoneInfo.GetSystemTimeZones()}");
display($"time zone Info standard name is {tzi.StandardName}");
display($"time zone Info ID is {tzi.Id}");
TimeZone localZone = TimeZone.CurrentTimeZone;
DateTime currentDate = DateTime.Now;
string currentTime = DateTime.Now.ToLongTimeString();
display($"standard name is {localZone.StandardName}");
display($"day light name is {localZone.DaylightName}");
display($"get daylight changes is {localZone.GetDaylightChanges(DateTime.Now.Year)}");
display($"Universal time is {localZone.ToUniversalTime(DateTime.Now)}");
display($"current time is {currentTime}");
display($"current date is {currentDate}");
//foreach (TimeZoneInfo z in TimeZoneInfo.GetSystemTimeZones())
// Console.WriteLine(z.Id);
TimeZoneInfo timeZone1;
display($"US Mountain Standard Time");
DateTime dateTime;
//Set the time zone information to US Mountain Standard Time
timeZone1 = TimeZoneInfo.FindSystemTimeZoneById("US Mountain Standard Time");
//Get date and time in US Mountain Standard Time
dateTime = TimeZoneInfo.ConvertTime(DateTime.Now, timeZone1);
//Print out the date and time
Console.WriteLine(dateTime.ToString("yyyy-MM-dd HH-mm-ss"));
display(string.Empty);
display("Press any key to exit:");
Console.ReadKey();
}
public void GetUtcOffsetAtDSTBoundary()
{
/*
* Getting a definitive list of timezones which do or don't observe Daylight
* Savings is difficult (can't say America's or USA definitively) and lengthy see
*
* http://en.wikipedia.org/wiki/Daylight_saving_time_by_country
*
* as a good starting point for a list.
*
* The following are SOME of the timezones/regions which do support daylight savings.
*
* Pacific/Auckland
* Pacific/Sydney
* USA (EST, CST, MST, PST, AKST) note this does not cover all states or regions
* Europe/London (GMT)
* CET (member states of the European Union)
*
* This test should work in all the above timezones
*/
TimeZone tz = TimeZone.CurrentTimeZone;
int year = DateTime.Now.Year;
DaylightTime daylightChanges = tz.GetDaylightChanges(year);
DateTime dst_end = daylightChanges.End;
if (dst_end == DateTime.MinValue)
{
Assert.Ignore(tz.StandardName + " did not observe daylight saving time during " + year + ".");
}
var standardOffset = tz.GetUtcOffset(daylightChanges.Start.AddMinutes(-1));
var dstOffset = tz.GetUtcOffset(daylightChanges.Start.AddMinutes(61));
Assert.AreEqual(standardOffset, tz.GetUtcOffset(dst_end));
Assert.AreEqual(dstOffset, tz.GetUtcOffset(dst_end.Add(daylightChanges.Delta.Negate().Add(TimeSpan.FromSeconds(1)))));
Assert.AreEqual(dstOffset, tz.GetUtcOffset(dst_end.Add(daylightChanges.Delta.Negate())));
Assert.AreEqual(dstOffset, tz.GetUtcOffset(dst_end.Add(daylightChanges.Delta.Negate().Add(TimeSpan.FromSeconds(-1)))));
}
public static void Main()
{
TimeZone zone = TimeZone.CurrentTimeZone;
System.Console.WriteLine(zone.StandardName);
System.Console.WriteLine(zone.DaylightName);
DateTime dtNow = DateTime.Now;
DateTime dt2 = new DateTime(2020, 12, 12);
System.Console.WriteLine(zone.IsDaylightSavingTime(dtNow));
System.Console.WriteLine(zone.IsDaylightSavingTime(dt2));
System.Console.WriteLine(zone.GetUtcOffset(dtNow));
System.Console.WriteLine(zone.GetUtcOffset(dt2));
System.Console.WriteLine();
DaylightTime day = zone.GetDaylightChanges(2020);
System.Console.WriteLine("2020 DST Begin: {0}", day.Start.ToString());
System.Console.WriteLine("2020 DST Ends: {0}", day.End.ToString());
System.Console.WriteLine("Time delta: {0}", day.Delta);
}
public static string GetDateWithFormat(string dt, string timeZone = "")
{
DateTime convertedDateTime;
var isValidFormat = DateTime.TryParse(dt, out convertedDateTime);
if (isValidFormat)
{
if (!String.IsNullOrEmpty(timeZone))
{
TimeZoneInfo timeInfo = TimeZoneInfo.FindSystemTimeZoneById(timeZone);
dt = TimeZoneInfo.ConvertTimeFromUtc(convertedDateTime, timeInfo).ToString("MM/dd/yyyy");
}
else
{
TimeZone localZone = TimeZone.CurrentTimeZone;
TimeSpan currentOffset = localZone.GetUtcOffset(convertedDateTime);
DaylightTime daylight = localZone.GetDaylightChanges(convertedDateTime.Year);
convertedDateTime = convertedDateTime.Add(currentOffset);
//convertedDateTime = convertedDateTime.Add(daylight.Delta); // If required then later we can add
return(convertedDateTime.ToString("MM/dd/yyyy"));
}
}
return(dt);
}
private void FormInfo_Load(object sender, EventArgs e)
{
TimeZone localZone = TimeZone.CurrentTimeZone;
DaylightTime daylight =
localZone.GetDaylightChanges(DateTime.Now.Year);
this.textBox.Text =
"Timezone: " + localZone.StandardName +
" \r\nDaylight saving time name: " + localZone.DaylightName +
" \r\nDaylight saving time: " + localZone.IsDaylightSavingTime(DateTime.Now) +
" \r\nDaylight start: " + daylight.Start.ToString() +
" \r\nDaylight end: " + daylight.End.ToString() +
" \r\nDelta: " + daylight.Delta +
" \r\nUTC time: " + localZone.ToUniversalTime(DateTime.Now) +
" \r\nUTC offset: " + localZone.GetUtcOffset(DateTime.Now)
;
this.textBox.SelectionStart = 0;
this.textBox.SelectionLength = 0;
}
public static void Show()
{
// DateTime and Time Zones
{
// When you compare two DateTime instances, only their ticks values are compared; their DateTimeKinds are ignored:
DateTime dt1 = new DateTime(2000, 1, 1, 10, 20, 30, DateTimeKind.Local);
DateTime dt2 = new DateTime(2000, 1, 1, 10, 20, 30, DateTimeKind.Utc);
Console.WriteLine(dt1 == dt2); // True
DateTime local = DateTime.Now;
DateTime utc = local.ToUniversalTime();
Console.WriteLine(local == utc); // False
// You can construct a DateTime that differs from another only in Kind with the static DateTime.SpecifyKind method:
DateTime d = new DateTime(2000, 12, 12); // Unspecified
DateTime utc2 = DateTime.SpecifyKind(d, DateTimeKind.Utc);
Console.WriteLine(utc2); // 12/12/2000 12:00:00 AM
}
// DateTimeOffset and Time Zones
{
// Comparisons look only at the (UTC) DateTime; the Offset is used primarily for formatting.
DateTimeOffset local = DateTimeOffset.Now;
DateTimeOffset utc = local.ToUniversalTime(); // 只会影响 UTC 偏移量
Console.WriteLine(local.Offset); // -06:00:00 (in Central America)
Console.WriteLine(utc.Offset); // 00:00:00
Console.WriteLine(local == utc); // True
//To include the Offset in the comparison, you must use the EqualsExact method:
Console.WriteLine(local.EqualsExact(utc)); // False
}
// TimeZone
{
// The static TimeZone.CurrentTimeZone method returns a TimeZone object based on the current local settings.
TimeZone zone = TimeZone.CurrentTimeZone;
zone.StandardName.Dump("StandardName");
zone.DaylightName.Dump("DaylightName");
// The IsDaylightSavingTime and GetUtcOffset methods work as follows:
DateTime dt1 = new DateTime(2008, 1, 1);
DateTime dt2 = new DateTime(2008, 6, 1);
zone.IsDaylightSavingTime(dt1).Dump("IsDaylightSavingTime (January)");
zone.IsDaylightSavingTime(dt2).Dump("IsDaylightSavingTime (June)");
zone.GetUtcOffset(dt1).Dump("UTC Offset (January)");
zone.GetUtcOffset(dt2).Dump("UTC Offset (June)");
// The GetDaylightChanges method returns specific daylight saving information for a given year:
DaylightTime day = zone.GetDaylightChanges(2010); // 返回指定年份的夏令时信息
if (day == null)
{
return;
}
day.Start.Dump("day.Start");
day.End.Dump("day.End");
day.Delta.Dump("day.Delta");
}
//TODO: 夏令时 的概念 暂时不了解
// Daylight Saving and DateTime
{
// The IsDaylightSavingTime tells you whether a given local DateTime is subject to daylight saving.
Console.WriteLine(DateTime.Now.IsDaylightSavingTime()); // True or False
// UTC times always return false:
Console.WriteLine(DateTime.UtcNow.IsDaylightSavingTime()); // Always False
// The end of daylight saving presents a particular complication for algorithms that use local time.
// The comments on the right show the results of running this in a daylight-saving-enabled zone:
DaylightTime changes = TimeZone.CurrentTimeZone.GetDaylightChanges(2010);
TimeSpan halfDelta = new TimeSpan(changes.Delta.Ticks / 2);
DateTime utc1 = changes.End.ToUniversalTime() - halfDelta;
DateTime utc2 = utc1 - changes.Delta;
// Converting these variables to local times demonstrates why you should use UTC and not local time
// if your code relies on time moving forward:
DateTime loc1 = utc1.ToLocalTime(); // (Pacific Standard Time)
DateTime loc2 = utc2.ToLocalTime();
Console.WriteLine(loc1); // 2/11/2010 1:30:00 AM
Console.WriteLine(loc2); // 2/11/2010 1:30:00 AM
Console.WriteLine(loc1 == loc2); // True
// Despite loc1 and loc2 reporting as equal, they are different inside:
Console.WriteLine(loc1.ToString("o")); // 2010-11-02T02:30:00.0000000-08:00
Console.WriteLine(loc2.ToString("o")); // 2010-11-02T02:30:00.0000000-07:00
// The extra bit ensures correct round-tripping between local and UTC times:
Console.WriteLine(loc1.ToUniversalTime() == utc1); // True
Console.WriteLine(loc2.ToUniversalTime() == utc2); // True
}
}
public override System.Globalization.DaylightTime GetDaylightChanges(int year)
{
return(currentTimeZone.GetDaylightChanges(year));
}
/**
* Calculates the 1900 based numerical value based upon the utc value held
* in the date object
*
* @param adjust TRUE if we want to incorporate timezone information
* into the raw UTC date eg. when copying from a spreadsheet
*/
private void calculateValue(bool adjust)
{
// Offsets for current time zone
long zoneOffset = 0;
long dstOffset = 0;
// Get the timezone and dst offsets if we want to take these into
// account
if (adjust)
{
// Get the current calender, replete with timezone information
//Calendar cal = Calendar.CurrentEra();
//cal.setTime(date);
//zoneOffset = cal[Calendar.ZONE_OFFSET];
//dstOffset = cal[Calendar.DST_OFFSET];
// TODO: fix this data handling....
DateTime now = DateTime.Now;
TimeZone zone = TimeZone.CurrentTimeZone;
zoneOffset = (long)zone.GetUtcOffset(now).TotalMilliseconds;
DaylightTime daylight = zone.GetDaylightChanges(now.Year);
if (daylight != null)
{
dstOffset = (long)daylight.Delta.TotalMilliseconds;
}
else
{
dstOffset = 0;
}
if (now.IsDaylightSavingTime())
{
zoneOffset += dstOffset;
}
//zoneOffset = cal[Calendar.ZONE_OFFSET];
//dstOffset = cal[Calendar.DST_OFFSET];
}
long utcValue = date.GetTime() + zoneOffset + dstOffset;
// Convert this to the number of days, plus fractions of a day since
// 01 Jan 1970
double utcDays = (double)utcValue / (double)msInADay;
// Add in the offset to get the number of days since 01 Jan 1900
value = utcDays + utcOffsetDays;
// Work round a bug in excel. Excel seems to think there is a date
// called the 29th Feb, 1900 - but this was not a leap year.
// Therefore for values less than 61, we must subtract 1. Only do
// this for full dates, not times
if (!time && value < nonLeapDay)
{
value -= 1;
}
// If this refers to a time, then get rid of the integer part
if (time)
{
value = value - (int)value;
}
}
public override DaylightTime GetDaylightChanges(int year)
{
return(internalTimeZone.GetDaylightChanges(year));
}
static void CompareTimeZoneData(TimeZone tz, TimeZoneInfo tzi, Java.Util.TimeZone jtz)
{
Console.WriteLine("## Comparing TimeZone Data:");
Console.WriteLine("# TimeZone: StandardName={0}; DaylightName={1}",
tz.StandardName, tz.DaylightName);
Console.WriteLine("# TimeZoneInfo: StandardName={0}; DaylightName={1}; DisplayName={2}; Id={3}",
tzi.StandardName, tzi.DaylightName, tzi.DisplayName, tzi.Id);
Console.WriteLine("# Java TimeZone: DisplayName={0}; ID={1}",
jtz.DisplayName, jtz.ID);
bool found_errors = false;
for (int year = 2012; year < 2015; ++year)
{
if (tz != null)
{
var dst = tz.GetDaylightChanges(year);
Console.WriteLine("Year: {0}; DST: {1} -> {2}", year, dst.Start.ToString("g"), dst.End.ToString("g"));
}
for (int month = 1; month <= 12; month++)
{
int lastDayInMonth = DateTime.DaysInMonth(year, month);
for (int day = 1; day <= lastDayInMonth; day++)
{
var localtime = new DateTime(year, month, day, 10, 00, 00, DateTimeKind.Local);
var utctime = localtime.ToUniversalTime();
var tz_offset = tz.GetUtcOffset(localtime);
var tzi_offset = tzi.GetUtcOffset(localtime);
var tz_dst = tz.IsDaylightSavingTime(localtime);
var tzi_dst = tzi.IsDaylightSavingTime(localtime);
using (var jd = ToDate(localtime)) {
var jtz_dst = jtz.InDaylightTime(jd);
var ms = (int)(localtime - new DateTime(year, month, day, 0, 0, 0, DateTimeKind.Local)).TotalMilliseconds;
var jtz_offseti = jtz.GetOffset(1, year, month - 1, day, ((int)localtime.DayOfWeek) + 1, ms);
var jtz_offset = TimeSpan.FromMilliseconds(jtz_offseti);
if (tz_offset != tzi_offset || tz_offset != jtz_offset || tzi_offset != jtz_offset ||
tz_dst != tzi_dst || tz_dst != jtz_dst || tzi_dst != jtz_dst)
{
found_errors = true;
Console.WriteLine("MISMATCH! @ {0} [{1}]", localtime, jd.ToLocaleString());
Console.WriteLine("\t TimeZone Offset: {0}", tz_offset);
Console.WriteLine("\t TimeZoneInfo Offset: {0}", tzi_offset);
Console.WriteLine("\tJava TimeZone Offset: {0}", jtz_offset);
Console.WriteLine("\t TimeZone DST: {0}", tz_dst);
Console.WriteLine("\t TimeZoneInfo DST: {0}", tzi_dst);
Console.WriteLine("\t Java TimeZone DST: {0}", jtz_dst);
}
}
}
}
}
if (found_errors)
{
var rules = tzi.GetAdjustmentRules();
for (int i = 0; i < rules.Length; ++i)
{
var rule = rules [i];
Console.WriteLine("# AdjustmentRules[{0}]: DaylightDelta={1}; DateStart={2}; DateEnd={3}; DaylightTransitionStart={4}/{5} @ {6}; DaylightTransitionEnd={7}/{8} @ {9}",
i,
rule.DaylightDelta,
rule.DateStart.ToString("yyyy-MM-dd"), rule.DateEnd.ToString("yyyy-MM-dd"),
rule.DaylightTransitionStart.Month, rule.DaylightTransitionStart.Day,
rule.DaylightTransitionStart.TimeOfDay.ToString("hh:mm:ss"),
rule.DaylightTransitionEnd.Month, rule.DaylightTransitionEnd.Day,
rule.DaylightTransitionEnd.TimeOfDay.ToString("hh:mm:ss"));
}
}
Assert.IsFalse(found_errors, "TimeZoneData MISMATCH! See logcat output for details.");
}
static void Main(string[] args)
{
try
{
const string dataFmt = "{0,-30}{1}";
const string timeFmt = "{0,-30}{1:MM-dd-yyyy HH:mm}";
TimeZone curTimeZone = TimeZone.CurrentTimeZone;
// What is TimeZone name?
System.Console.WriteLine(dataFmt, "TimeZone Name:", curTimeZone.StandardName);
// Is TimeZone DayLight Saving?|
System.Console.WriteLine(dataFmt, "Daylight saving time?", curTimeZone.IsDaylightSavingTime(DateTime.Now));
// What is GMT (also called Coordinated Universal Time (UTC)
DateTime curUTC = curTimeZone.ToUniversalTime(DateTime.Now);
System.Console.WriteLine(timeFmt, "Coordinated Universal Time:", curUTC);
// What is GMT/UTC offset ?
TimeSpan currentOffset = curTimeZone.GetUtcOffset(DateTime.Now);
System.Console.WriteLine(dataFmt, "UTC offset:", currentOffset);
// Get DaylightTime object
System.Globalization.DaylightTime dl = curTimeZone.GetDaylightChanges(DateTime.Now.Year);
// DateTime when the daylight-saving period begins.
System.Console.WriteLine("Start: {0:MM-dd-yyyy HH:mm} ", dl.Start);
// DateTime when the daylight-saving period ends.
System.Console.WriteLine("End: {0:MM-dd-yyyy HH:mm} ", dl.End);
// Difference between standard time and the daylight-saving time.
System.Console.WriteLine("delta: {0}", dl.Delta);
System.Console.Read();
//string input = "";
//bool state = true;
//var value = Environment.GetEnvironmentVariable("DOTNETBACKEND_PORT");
//// If necessary, create it.
//if (value == null)
//{
// Environment.SetEnvironmentVariable("DOTNETBACKEND_PORT", "5567");
// // Now retrieve it.
// value = Environment.GetEnvironmentVariable("DOTNETBACKEND_PORT");
//}
//Environment.SetEnvironmentVariable("DOTNET_ASSEMBLY_SEARCH_PATHS", @"C:\WorkingFolder-Custom\TZ.BigDataScript\TZ.DataAnalyzer.Console\bin\Debug");
//while (state)
//{
// System.System.Console.WriteLine("Enter Query.");
// input = System.Console.ReadLine();
// AScript script = new AScript();
// script.Compile(input,"");
// //AntlrInputStream inputStream = new AntlrInputStream(input);
// //AScriptLexer exprL = new AScriptLexer(inputStream);
// //CommonTokenStream commonTokenStream = new CommonTokenStream(exprL);
// //AScriptParser expPar = new AScriptParser(commonTokenStream);
// //// exprParser.GroupdataContext getContext = expPar.groupdata();
// //AScriptParser.StatementContext getContext = expPar.statement();
// //AScriptVisitor visitor = new AScriptVisitor();
// //visitor.Visit(getContext);
// //foreach (var line in visitor.Lines)
// //{
// // System.System.Console.WriteLine("{0 } has said {1} ", line.Person, line.Text);
// //}
// //// var item= System.Console.ReadLine();
// //if (input == "exist")
// //{
// // state = false;
// //}
// //else
// //{
// // state = true;
// //}
//}
}
catch (Exception ex)
{
}
finally
{
System.Console.ReadLine();
}
}