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The Z in 2008-01-01T00:00:00Z in the above example means that the time is specified in GMT. To specify the time times in a different time zone use e.g. 2008-06-20T11:33:00+05:00 for a time in time zone GMT+05:00. Note: 2008-06-20T11:33:00+05:00 is physically the same time as 2008-06-20T06:33:00Z in GMT.