Warning: date() [function.date]

Anyone know how to fix this error, not sure how to set?  I do not recall setting any thing that it refers to. Thanks 

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Denver' for 'MST/-7.0/no DST' instead in /home/dietary/public_html/inc/classes/BxDolTemplate.php on line 782

date_default_timezone_set('America/Denver');

PASTE THIS INTO THE TOP OF  INC/header.inc.php

happy thoughts

That seems to work, THANKS!

The best way would be to set it in the PHP config file, usually php.ini.  If you don't have access to the php config on your host, then you can include a php.ini file in your root of the site; you can get a copy of the host's php.ini file and then change the date location.