public utc offset_hour(int h)
{
utc total = new utc(year, month, date, hour, minute, sec);
if (h > 0)
{
if (hour + h < 24)
{
total.hour += h;
}
else if (date < JTime.date_amount_of_month(total.year, total.month))
{
total.date += 1;
total.hour = total.hour - 24 + h;
}
else if (month <= 11)
{
total.month += 1;
total.date = 1;
total.hour = total.hour - 24 + h;
}
else
{
total.year += 1;
total.month = 1;
total.date = 1;
total.hour = total.hour - 24 + h;
}
return(total);
}
else if (h < 0)
{
h = -h;
if (hour >= h)
{
total.hour -= h;
}
else if (date > 1)
{
total.date -= 1;
total.hour = total.hour + 24 - h;
}
else if (month > 1)
{
total.month -= 1;
total.date = total.date - 1 + JTime.date_amount_of_month(total.year, total.month);
total.hour = total.hour + 24 - h;
}
else
{
total.year -= 1;
total.month += 11;
total.date = total.date - 1 + JTime.date_amount_of_month(total.year, total.month);
total.hour = total.hour + 24 - h;
}
return(total);
}
return(total);
}
private void get_doy()
{
doy = 0;
for (int i = 1; i < cur.month; i++)
{
doy += JTime.date_amount_of_month(cur.year, i);
}
doy += cur.date;
}
public void change_to_doy(int doy)
{
int temp = doy;
for (int i = 1; i <= 12; i++)
{
temp = JTime.date_amount_of_month(year, i);
if (doy <= temp)
{
month = i;
date = doy;
return;
}
else
{
doy -= temp;
}
}
throw new Exception();
}