Originally Posted by sink
That's an interesting one. The DS1307 is completely naive of timezones so the issue would be with the time your computer is putting out somehow not compensating for DST. I presume you set the clock using the timerset.pde sketch?
Oh- I forgot about that separate sketch. My DS1307 must still be running from the last time that I set it. That says a lot since it's been out in a drawer collecting dust for the last six months,LOL. I guess the back up battery must have kept it alive.
I'll have to try that sketch. I just adjusted the start and stop time in the main sketch to compensate for now. hehe!