“This March, Daylight Saving Time (DST) changes for the United States, starting the time change 4 weeks early. Congress in its infinite wisdom changed DST in the Energy Policy Act of 2005. Other countries such as Australia have followed suit. For most people, this will come as an early relief from winter doldrums, but for IT, the DST change is a major headache. After Year 2000, IT vendors were smart enough to start using 4-digit date codes, but DST changes are still hard-coded for the 1st Sunday of April and the last Sunday of October.

To accommodate the DST change, most IT systems must be patched. Otherwise, timestamps will be off, and some applications my fail to work.”