[firebird-support] Firebird shows previous timezone after that was changed

['Mr. John' mr_joh...@yahoo.com [firebird-support]]

Hi on a Windows 10 x64 server timezone was changed 24 hours ago,but firebird 
(2.5.7) still shows date and time from older  timezone when running: select 
current_date, current_timestamp from rdb$database;
how to make it give current values?
thanks