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Getting CST and EST time in java

I get the same time for EST and CST. Please find the code below.

Calendar.getInstance(TimeZone.getTimeZone("EST"));

and Calendar.getInstance(TimeZone.getTimeZone("CST"));

both return the same time.

Please help me to solve this problem.

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1 answer


The reason you are getting the same time is because EST returns standard time and CST returns daytime.

Date today = new Date();
DateFormat df = new SimpleDateFormat("HH:mm:SS z");
df.setTimeZone(TimeZone.getTimeZone("US/Eastern"));
String time = df.format(today);
System.out.println(time);
df.setTimeZone(TimeZone.getTimeZone("EST"));
time = df.format(today);
System.out.println(time);
df.setTimeZone(TimeZone.getTimeZone("CST"));
time = df.format(today);
System.out.println(time);

and this is the result:



04:55:839 EDT
03:55:839 EST
03:55:839 CDT

The EST time does not match the correct time because it is actually 04:55 now, so it US/Eastern

will give you the correct time (EDT). As a general rule, I would recommend to always use formats US/Eastern

and US/Central

for security reasons.

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