TIME ZONE ERROR:????

[brian.hall02]

Good Day

I am in the process of moving our orangehrm installation to another server. In the process i received the following error:
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Warning

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 'UTC' for 'UTC/0.0/no DST' instead

Technical Details

Encountered the problem in /var/www/html/orangehrm/lib/exception/ExceptionHandler.php Line 186
System Environment

OrangeHRM : 2.5.0.4-Mona-School-of-Business-Phase1-beta.1
PHP : 5.3.2
MySQL Client : 5.1.47
Memory limit : 128M
Maximum session lifetime : 1440
Please note

The error was logged in the OrangeHRM log located in /var/www/html/orangehrm/lib/logs/logDB.txt
If you are unable to resolve the problem please post the problem in OrangeHRM Forum
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Can anyone assist me. It would be greatly appreciated.
Thanks in advance,