setting the correct time and date

hello all,

in all of my mikrotik devices when i see the LOG table, i dont see the correct time, so i m not bale to see the right time of any LOG.
i live in INDIA, i wanna set the LOG time and date according to Indian stand time.[IST]
how to do it..?

Thx & Regards.
LOG time.JPG

http://wiki.mikrotik.com/wiki/Manual:System/Time