How save timestamp according to Asia timezone

Hi
I receive timestamp base of UTC and save it into database
Now i need report all data example between 2:30 to 14:43
And i am Tehran with GMT +3:50
Can i save timestamp base of Asia/Tehran timezone or i can only get their base of my favorite timezone?
Can i set timezone to Asia/Tehran on mysql when i use SELECT command?
Thanks

Hi, not sure is that what are you asking, but you can use mysql date_add and date_sub functions. 

https://dev.mysql.com/doc/refman/5.5/en/...n_date-add
https://dev.mysql.com/doc/refman/5.5/en/...n_date-sub

Hi
I need set timezone in mysql and execute query $this->db->where("TIME_FORMAT(FROM_UNIXTIME(time),'%H:%i') >=", $from_time);

Can i define timezone in FROM_UNIXTIME function?