android - List of supported Locale Times

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I need to get Locale Time of Nepal but
could not get through it. How to get Locale Time for Nepal, which is GMT+5:45? How can I
get through it? How to change the Locale, English according to our local time? Here
date is in English
Standard.

Date d = new
            SimpleDateFormat("yyyy-MM-dd
            HH:mm:ss",Locale.ENGLISH).parse(date);

 Calendar cal =
            Calendar.getInstance();
 cal.setTime(d);
 String timeName = new
            SimpleDateFormat("hh:mm a").format(cal.getTime());
 return
            timeName;

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class="normal">Answer

The time
zone ID to use for Nepal time is Asia/Kathmandu. Time zone IDs
generally have the format region/city, where city is the largest
populated area in the time zone (not necessarily a capital; for example the time used in
Beijing is Asia/Shanghai, and in Delhi it is
Asia/Kolkata).

You get
the set of supported time zone IDs from
ZoneId.getAvailableZoneIds(). And
"Asia/Kathmandu" is a member of the returned
set.

Locale and
time zone are different and unrelated concepts (even though each is
often associated with a geographical area, but not always). Locale has to do with
language and culture, not with time.

So to
convert for example a time of 2018-10-08 20:42:53 in the United
Kingdom (England, Northern Ireland, Wales and Scotland) to Nepal
time:

 DateTimeFormatter
            fromFormatter = DateTimeFormatter.ofPattern("uuuu-MM-dd HH:mm:ss");
 ZoneId
            fromZone = ZoneId.of("Europe/London");
 DateTimeFormatter toTimeFormatter =
            DateTimeFormatter.ofLocalizedTime(FormatStyle.SHORT)

            .withLocale(Locale.US);
 ZoneId toZone =
            ZoneId.of("Asia/Kathmandu");


 String englishDateTime =
            "2018-10-08 20:42:53";
 ZonedDateTime dateTimeInEngland =
            LocalDateTime
 .parse(englishDateTime, fromFormatter)

            .atZone(fromZone);
 LocalTime timeInNepal =
            dateTimeInEngland.withZoneSameInstant(toZone)

            .toLocalTime();


            System.out.println(timeInNepal.format(toTimeFormatter));

Output
is:

1:27
AM

I am using
java.time, the modern Java date and time API. I much prefer it over the outdated date
and time classes Date,
SimpleDateFormat and Calendar that you
used in the question.

Question: Can I use
java.time on
Android?

Yes,
java.time works nicely on Android devices. It just requires at
least Java
6.

• In Java
  8 and later and on new Android devices (from API level 26, I’m told) the new API comes
  built-in.


• In Java 6 and 7 get the ThreeTen Backport, the
  backport of the new classes (ThreeTen for JSR 310, where the modern API was first
  described).


• On (older) Android, use the Android edition
  of ThreeTen Backport. It’s called ThreeTenABP. Make sure you import the date and time
  classes from package org.threeten.bp and
  subpackages.

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