/// <summary>
/// Converts a <see cref="DateTime" /> of any kind to a LocalDate in the specified calendar, ignoring the time of day.
/// This does not perform any time zone conversions, so a DateTime with a <see cref="DateTime.Kind"/> of
/// <see cref="DateTimeKind.Utc"/> will still represent the same year/month/day - it won't be converted into the local system time.
/// </summary>
/// <param name="dateTime">Value to convert into a Noda Time local date</param>
/// <param name="calendar">The calendar system to convert into</param>
/// <returns>A new <see cref="LocalDate"/> with the same values as the specified <c>DateTime</c>.</returns>
public static LocalDate FromDateTime(DateTime dateTime, [NotNull] CalendarSystem calendar)
{
long ticks = dateTime.Ticks - NodaConstants.BclTicksAtUnixEpoch;
int days = TickArithmetic.TicksToDays(ticks);
return(new LocalDate(days, calendar));
}
/// <summary>
/// Converts a <see cref="DateTime" /> of any kind to a LocalDate in the ISO calendar, ignoring the time of day.
/// This does not perform any time zone conversions, so a DateTime with a <see cref="DateTime.Kind"/> of
/// <see cref="DateTimeKind.Utc"/> will still represent the same year/month/day - it won't be converted into the local system time.
/// </summary>
/// <param name="dateTime">Value to convert into a Noda Time local date</param>
/// <returns>A new <see cref="LocalDate"/> with the same values as the specified <c>DateTime</c>.</returns>
public static LocalDate FromDateTime(DateTime dateTime)
{
long ticks = dateTime.Ticks - NodaConstants.BclTicksAtUnixEpoch;
int days = TickArithmetic.TicksToDays(ticks);
return(new LocalDate(days));
}