Oct 26 2007
Daylight Savings Time Trivia
- It’s “Daylight Saving Time,” NOT “Daylight SavingS Time”
- Sonora Mexico is adjacent to Arizona so it follows the Arizona convention of not observing DST
- In the US, DST changes at 2am local time. In the EU, DST changes simultaneously in 3 time zones — 1am, 2am or 3am depending on which time zone you are in. This allows all of the EU to change their clocks simultaneously.
- DST start/stop rules are reversed in the Southern Hemishpere, just like the seasons
- Argentina and Iceland observe DST year-round with no clock shifts
- Prior to 2006 certain counties in Indiana observed DST while others did not
- Australia has 5 time zones when DST is in effect including half hour zones (UTC+9, +9.5, +10, +10.5, +11), and has 3 timezones when DST is not in effect
- Before 2005 DST in Israel varied each year and was skipped some years
- DST rules anywhere in the world can change at any time via local re-legislation