How to insert timezone format as shown below in WCF services using linq timezone:------------ (UTC-03:00) greenland (UTC+05:30) chennai, kolkata, mumbai, newdelhi (UTC+05:45) kathmandu etc?

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WCFServices

wcfservice using linq,db-Sql Server
when we insert the timezone like above format it should be check
a.starting should be (
b.UTC
c.+ or -
d.-12:00 to+14:00
e.)
f.space
g.Name not accepting (special charachter and numerics,)
h.space and , can be allow between Name

What I have tried:

Validation in wcf services using linq