Java tutorial
import java.util.Calendar; import java.util.GregorianCalendar; import java.util.TimeZone; public class Main { public static void main(String[] argv) throws Exception { Calendar japanCal = new GregorianCalendar(TimeZone.getTimeZone("Japan")); japanCal.set(Calendar.HOUR_OF_DAY, 10); // 0..23 japanCal.set(Calendar.MINUTE, 0); japanCal.set(Calendar.SECOND, 0); Calendar local = new GregorianCalendar(); local.setTimeInMillis(japanCal.getTimeInMillis()); int hour = local.get(Calendar.HOUR); // 5 int minutes = local.get(Calendar.MINUTE); // 0 int seconds = local.get(Calendar.SECOND); // 0 boolean am = local.get(Calendar.AM_PM) == Calendar.AM; // false } }