CODEWITHSUNDEEP
javadate-format
Prithiv Dharmaraj
Prithiv Dharmaraj

Reputation: 357

EST time conversion with daylight saving time

EST time conversion with daylight saving time it is coming wrongly 

private void timeConversion() {
    String s = "2016-08-29 1:40:00 AM";
    DateFormat df = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss a", Locale.ENGLISH);
    df.setTimeZone(TimeZone.getTimeZone("EST"));
    Date timestamp = null;
    try {
        timestamp = df.parse(s);
        df.setTimeZone(TimeZone.getDefault());
        System.out.println(df.format(timestamp));
    } catch (ParseException e) {
        e.printStackTrace();

    }
}

Upvotes: 1

Views: 1116

Answers (1)

dpr
dpr

Reputation: 10964

The time zone EST does not respect any daylight saving time offsets:

TimeZone estTz = TimeZone.getTimeZone("EST");
System.out.println(estTz.useDaylightTime()); // prints 'false'

That is the time zone EST will always have a -5:00 hour offset to UTC.

This is probably due to some locations in Canada, Mexiko and Central America (Panama) not using DST but using EST all the year.

If you want a time zone with DST offset, you should use something like US/Eastern or America/New_York, etc:

TimeZone usEasternTz = TimeZone.getTimeZone("US/Eastern");
System.out.println(usEasternTz.useDaylightTime()); // prints 'true'

Upvotes: 1

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