Converting EDT time zone to GMT not working fine in java
java, timezone
Solution
The time zone 'EDT' does not exist. Doing a `System.out.println()` of `TimeZone.getTimeZone("EDT") shows that it is falling back to GMT because Java does not know 'EDT' as a time zone.
Changing from `"EDT"` to `"GMT-04:00"` gives the correct result:
try {
String s = "2012-06-20 18:09:38";
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
//df.setTimeZone(TimeZone.getTimeZone("EDT"));
df.setTimeZone(TimeZone.getTimeZone("GMT-04:00"));
Date timestamp = null;
timestamp = df.parse(s);
df.setTimeZone(TimeZone.getTimeZone("GMT+05:00"));
System.out.println("Old = " + s);
String parsed = df.format(timestamp);
System.out.println("New = " + parsed);
} catch (Exception e) {
e.printStackTrace();
}
Result:
Old = 2012-06-20 18:09:38
New = 2012-06-21 03:09:38
According to this post:
Eastern Daylight Time isn't the name of a "full" time zone - it's "half" a time zone, effectively, always 4 hours behind UTC.
So using `"GMT-04:00"` might be the right solution.
Problem
I am using this code to parse this date. It must show new date as "2012-06-20 03:09:38" as EDT is -4GMT and my current location is GMT+5. But its not showing this it now showing as it is ``` private static void convertEDT_TO_GMT() { try { String s = "2012-06-20 18:09:38"; SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); df.setTimeZone(TimeZone.getTimeZone("EDT")); Date timestamp = null; timestamp = df.parse(s); df.setTimeZone(TimeZone.getTimeZone("GMT+05:00")); System.out.println("Old = " + s); String parsed = df.format(timestamp); System.out.println("New = " + parsed); } catch (Exception e) { e.printStackTrace(); } } ``` It show Old = 2012-06-20 18:09:38 New = 2012-06-20 23:09:38