Urgent PST time changing tonight

Hi All,

PST time changing tonight, I am not sure if this is going to affect the database. 

Please throw some light if the time change affect on our production system.

Briefly - We have 2 production database servers with postgresql 8.3.3 and pgpool 2.1 version running.

Here is the postgres configuration details about time zone.

#log_timezone = unknown # actually, defaults to TZ environment setting

datestyle = 'iso, mdy'

#timezone = unknown # actually, defaults to TZ environment

# setting

#timezone_abbreviations = 'Default'     # Select the set of available time zone

# abbreviations.  Currently, there are

#   Default

#   Australia

#   India

# You can create your own file in

# share/timezonesets/.

log_timezone, timezone and timezone_abbreviations are set to default.

Thanks

Deepak Murthy