Debug Daylight Time Changes
The forum post how to test Daylight Saving Time settings for 2007 contains a script that tests daylight saving changes without altering the system time.
Like Y2K, the early daylight savings change this year gives management something to fuss over. I’m personally in favor of more gmtime(3) and less localtime(3) use, as a code review at work reveals many needless localtime uses. Unfortunately these uses will require a fair amount of work to convert to gmtime, especially where the data wanders off to other groups.