Time.toMillis (boolean) does not include time zone

Question

Consider the following code:

Time time1 = new Time("America/Los_Angeles"); // UTC -8 Time time2 = new Time("Pacific/Kiritimati"); // UTC +14 time1.setToNow(); time2.setToNow(); Log.d("timetest", "America/Los_Angeles: " + time1.toMillis(false)); Log.d("timetest", "Pacific/Kiritimati : " + time2.toMillis(false)); 

Here is the log that gets the output:

 08-03 07:27:50.687: D/timetest(28411): America/Los_Angeles: 1375540070000 08-03 07:27:50.687: D/timetest(28411): Pacific/Kiritimati : 1375540070000 

As you can see, the millisecond values ​​are identical, even if they are full 22 hours depending on time zones. This makes me think that Time.toMillis(boolean) based on UTC, not on the time zone of Time . I need a way to get milliseconds based on the time zone of Time . Any ideas?

Answer 1

The number of milliseconds since the era of January 1, 1970 00:00:00 UTC is the same everywhere. It doesn’t matter if you are currently in Los Angeles or Kiritimati.

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EDIT

The toMillis method returns the number of milliseconds since an era. The era of January 1, 1970 00:00:00 UTC.

Think of it this way. If person A was born in Los Angeles in the era, and person B was born in Kiritimati in the era, then the age of person A would be time1.toMillis() , and the current age of person B would be time2.toMillis() , right?

Although the UTC time zone was midnight when they were born, it was not midnight in their respective time clock. You can find out by their time zones: UTC-8 and UTC + 14.

Now, if time1.toMillis() != time2.toMillis() this will mean that one of the two people is older. This would mean that he lived more than a millisecond in his life. Of course, this is not so, because, as we said, they were born at the same time. Therefore, the conclusion that you see is correct , and I do not think that you should try to change it.

Answer 2

Found this out with Time.gmtoff , which contains the UTC offset in seconds.

 Time time1 = new Time("America/Los_Angeles"); // UTC -8 Time time2 = new Time("Pacific/Kiritimati"); // UTC +14 time1.setToNow(); time2.setToNow(); Log.d("timetest", "America/Los_Angeles: " + (time1.toMillis(false) - (time1.gmtoff * 1000))); Log.d("timetest", "Pacific/Kiritimati : " + (time2.toMillis(false) - (time2.gmtoff * 1000))); 

Resulting Log:

 08-03 07:53:04.866: D/timetest(31414): America/Los_Angeles: 1375566784000 08-03 07:53:04.866: D/timetest(31414): Pacific/Kiritimati : 1375491184000