timezone

Hi,
I try to set timezone in my block and put the example script into my script. It works well till I don't try set timezone. I try this:
'until' => date("F d, Y g:i a", mktime(0,0,0,0,0,2009)),
'timezone' => +1,
'format' => 'YOWDHMS',
If I clear timezone set it works well. Othercase it throw this error:
Parse error: syntax error, unexpected T_ECHO, expecting ')' in C:\XAMPP\xampp\htdocs\includes\common.inc(1696) : eval()'d code on line 22
What kind of syntax should I use to set timezone? And I would like use GMT(0)...
Thanx!