Hello Below is the time zone version used in my Linux machine. ======================================================== Name : tzdata Relocations: (not relocatable) Version : 2016d Vendor: CentOS Release : 1.el5 Build Date: Fri 22 Apr 2016 10:07:55 AM PDT Install Date: Thu 12 May 2016 09:14:18 AM PDT Build Host: builder17.centos.org Group : System Environment/Base Source RPM: tzdata-2016d-1.el5.src.rpm Size : 1803555 License: Public Domain Signature : DSA/SHA1, Fri 22 Apr 2016 10:36:20 AM PDT, Key ID a8a447dce8562897 URL : https://www.iana.org/time-zones Summary : Timezone data Description : This package contains data files with rules for various time zones around the world ======================================================== Asia/Tijuana has DST started on 13 Mar 2016 and will End on 6 Nov 2016. On 13 Mar 2016 if i keep time as 02:00:00 it should ideally jump to 03:00:00 Similarly On 6 Nov 2016 if i keep time as 02:00:00 it should jump to 01:00:00 The same is not happening on my machine. ========================================================= . Please Help me out for resolving this Thanks and Regards Ajay