test for countdown in relation to GMT

set on notebook on TZ UTC london time for start time 23 hrs




set on notebook on TZ UTC london time for start time 16 hrs


THIS LAST ONE IS SETTING THE COUNTDOWN TIME CORRECT looking at the notebook
This FIRST one is correct looking at my PC with Timezone +7 GMT



set on PC with thai time and timezone +7 set for 2300 hrs start
this one reads correct on the PC with Timezone +7




set on PC with thai time and timezone +7 set for 1600 hrs to start
this one reads wrong on time zone +7