mysql check for timezone tables CONVERT_TZ code example

Example 1: convert_tz mysql

CONVERT_TZ(datetime, from_tz, to_tz)

Example: 
SELECT CONVERT_TZ('2031-09-21 02:42:14', 'UTC', 'America/New_York');
output: 2031-09-20 22:42:14

Example 2: CONVERT_TZ mysql

##Syntax: 
##CONVERT_TZ(datetime, from_tz, to_tz)

SELECT CONVERT_TZ('2008-05-15 12:00:00','+00:00','+10:00');
##Output: 2008-05-15 22:00:00