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27.TimeZone
Java Data Type Q&A » TimeZone » dst 

1. Java Date, render with specific daylight mode    stackoverflow.com

I have a Java Date that is from this summer during daylight savings time. For example:

Jun 01, 2009 06:00 AM PDT
My question is, how do I display this date ...

2. Arizona TimeZone Day Light Saving    stackoverflow.com

I am trying to get current time in specific time zones. I tried following code.

Calendar j = new GregorianCalendar(TimeZone.getTimeZone("US/Mountain"));
j.setTimeInMillis(Calendar.getInstance().getTimeInMillis());
System.out.println(j.get(Calendar.HOUR_OF_DAY)+":"+j.get(Calendar.MINUTE));
TimeZone tz = TimeZone.getTimeZone("US/Mountain");
System.out.println("tz.getRawOffset()"+tz.getRawOffset()/3600);
System.out.println(tz.getDSTSavings());
System.out.println

(tz.inDaylightTime(new Date()));
The answer I got is surprising - 16:57 - wrong ...

3. Building TimeZone object in Java    stackoverflow.com

I build a Java TimeZone object using the TimeZone String like GMT-8,GMT,PST,EST etc. This did not consider whether the timezone is daylight saving enabled or not.Now there is a requirement to include ...

4. What is the joda-time equivalent of few JDK TimeZone functions    stackoverflow.com

what is the joda-time equivalent of below methods in JDK.

  1. TimeZone.getOffset()
  2. TimeZone.getRawOffset()
  3. TimeZone.inDaylightTime()
  4. TimeZone.useDaylightTime()
  5. TimeZone.getDSTSavings()
My main idea is to store the below in database as suggested by most of the SO posts
  1. time in UTC = joda ...

5. Calculating a time duration with Joda-Time    stackoverflow.com

I'm trying to use Joda-Time in order to know time durations between two points in time, where each point is given in its own local timezone. E.g. :

DateTime ny = new DateTime(2011, ...

6. Does Timezone include DST information?    stackoverflow.com

I'm working on an application where I need to maintain times from different location. I'm using Date, Timezone classes in Java. My question is - does the Timezone class know details ...

7. Determine Timezone based on offset and DST offset    stackoverflow.com

I was wondering if there was a way to build a java TimeZone object given the 2 gmt-hour-offsets as integers. For example, if I was given (-5, -6), then I would ...

8. Using Joda Time with IATA Time zone    stackoverflow.com

Innovata publish the IATA Time Zone/Daylight Saving Time data for airline industry.
These files contains airport code, IATA Time Zone, start/stop date for UTC offset, UTC offset and ...

9. Determine dates of DST switch (both forwards and backwards) for a timezone in Java?    stackoverflow.com

I realize that you can check if a Date is inDaylightTime, but how can I determine when (or if) that Date switches to and from DST? I realize that I can ...

10. Java DST timezone question    forums.oracle.com

I am trying to write a procedure that will return the start and end times of Daylight Saving Time, when passed a timezone and a year. I have read the timezone method and the simpletimezone constructs, and I do not see how these constructs provide this information. I have tried things like the following to try to get more info but ...

11. DST offset is non-zero for "Asia/Calcutta" timezone for specific dates.    forums.oracle.com

What do you mean, error? Here's the data from the Olson TZ database: # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Kolkata 5:53:28 - LMT 1880 # Kolkata 5:53:20 - HMT 1941 Oct # Howrah Mean Time? 6:30 - BURT 1942 May 15 # Burma Time 5:30 - IST 1942 Sep 5:30 1:00 IST 1945 Oct 15 5:30 - IST So, ...

12. Help please: JDK DST Timezone Update Tool - 1.3.3    forums.oracle.com

I need to download the timezone updater tool ASAP before our daylight savings here in Australia change. When I follow the link from the sun page (I have been trying every day for 5 days now): [http://java.sun.com/javase/downloads/index.jsp#timezone|http://java.sun.com/javase/downloads/index.jsp#timezone] I get a "Transmission problems prevent your transaction from being processed correctly. The administrator has been notified by the system. Please try again soon." ...

13. Timezone.getOffset() and DST    forums.oracle.com

long date2Millis = date1Millis - tz1RawOffset; return new Date(date2Millis); } /** * toDate - Convert GMT Date, gmtDate, to a date of TimeZone, tz * @return Date */ public static Date toDate(Date gmtDate, TimeZone tz) { GregorianCalendar cal = new GregorianCalendar(tz); long dateMillis = gmtDate.getTime(); int tzRawOffset = tz.getOffset(dateMillis); int tzRawOffset = tz.getOffset(cal.get(Calendar.ERA), cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH), cal.get(Calendar.DAY_OF_WEEK), cal.get(Calendar.MILLISECOND)); long rtnDateMillis = ...

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