
Add possible client list from it's current GMT offset in hours
We add the xones for the current offest and also the ones for offset-1 and offset+1 because
we have no way to know (or at leats that i know of) wether the client is currently in Daylight savings or not
by adding the 1hour before and after timezones this should cover the potential offsets at those times of the year
where the client is in DST but GMT is not yet.

Add possible client list from it's current GMT offset in hours
We add the xones for the current offest and also the ones for offset-1 and offset+1 because
we have no way to know (or at leats that i know of) wether the client is currently in Daylight savings or not
by adding the 1hour before and after timezones this should cover the potential offsets at those times of the year
where the client is in DST but GMT is not yet.
Ex: client in the US during late march is -7 vs GMT(not swicthed to summer time yet) rather than usual -8.
Returns:
Parameters:
-
hoursOffset -