GMT+5:30 Timezone not shows in settings

Hi

I want to set the Indian time in ticket but when I trying change in
setting it now showing option for india like GMT+5:30.
Please guide what I required to do the same.

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I want to set the Indian time in ticket but when I trying change in
setting it now showing option for india like GMT+5:30.
Please guide what I required to do the same.

RT uses the DateTime::TimeZone module to provide a list pulled from
the Olsen file:

It provides Asia/Kolkata which is +5:30 and appears equivalent to IST.
Were you looking for something different?

-kevin