Insulin Pumps do exactly what YOU tell them to
We recently adjusted our clocks for daylight saving time, you know, spring ahead/fall back type of thing.
I made sure to adjust the time on my pump, moving it ahead an hour. I adjusted it sometime on Sunday (I think). This may not be a big deal, but I do run a slightly higher basal rate from 3am to 11am to offset the dawn phenomenon.
I woke up this morning with a higher than usual blood sugar (279). I didn't think much of it, just kind of wrote it off to miscalculating carbs last night or something.
At precisely 9am my pump started alerting me, with my 9pm alarm! Doh!
I goofed up when adjusting the time on my pump, and was off my 12 hours (the AM/PM setting).
Well, that explains the high bg in the morning! These things are machines, and do exactly what you tell them to!