In four days my car clock will be right again.

[Thunderbeast]

5. I have a clock radio made many years ago.

It receives a time stamp over the air. The only adjustment I can make is to the time zone. Daylight saving time was "hard wired" into the logic based on the older DST dates that ran from April to October. As a result the displayed time is out of phase for three weeks in the spring...and three weeks in the fall.

To compensate, I need the change my time zone to Mountain Time Zone for these weeks. Like the famous Y2K issues facing computers at the turn of the century, product designers burned the dates into the chip logic without considering that the world might change to make their product obsolete.