def set_current_process_time_zone(self):
TZ = self.conn.execute('<STR_LIT>').fetchall()[<NUM_LIT:0>][<NUM_LIT:0>]<EOL>return set_process_timezone(TZ)<EOL>
This function queries a GTFS connection, finds the timezone of this
database, and sets it in the TZ environment variable.  This is a
process-global configuration, by the nature of the C library!

Returns
-------
None

Alters os.environ['TZ']