How to setting config.timezone in non-Rails application?

Hello all, I’m developing a sinatra application and loads ActiveRecord in,

the main server is in rails, the many clients is written in Sinatra, now
I
need to sync
job from server to client where saving the related datetime seems a
problem,
it seems rails has done some handling about timezone, when converting to
yaml to send,
it just “2012-08-29 16:00:00.000000000Z” (seems to convert to UTC and
just
have a Z in it
to denote it), and then in client, I need to de_yaml it, and saves it,
it
seems messy,
and do client has a way to set a TimeZone?
it seems in ThreadLocal Time.zone= fits this description, but do anybody
know how the param
pattern looks like?

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