dst technology

i thought the clock in my clock would adjust automatically for dst, as it usually does.  i had assumed it gets its time from the gps signal or something.  turns out i was wrong. i did a little research and found a service announcement for dst from honda.  i thought it was kinda funny, so i'm posting it here.

This year, a new federal law kicks in that stretches out Daylight Saving Time (DST) by a full month. DST
now starts on the second Sunday in March and ends the first Sunday in November. For this year, it means
the clocks spring forward at 2:00 a.m. on March 11th, and fall back at the same time on November 4th.
(Last year, the clocks sprang forward on April 2nd, and fell back on October 29th.)
In navigation systems that allow for DST, this poses a problem—the system doesn't know about the new
DST schedule. We're working on a software patch to correct for this new schedule, but until it's available,
here's what you can do when the clocks spring forward:
1. Go to the appropriate screen that's used for adjusting the clock.
• If the screen has a setting for DST, turn off that setting and go to step 2.
• If the screen doesn't have a setting for DST, go to step 2.
2. Set the clock to the correct time if needed.