Why did my alarm go off one hour early?

Thank you!!! This happened to me on Monday (alarm set for Mondays and Tuesdays only for 6.30) and Boy From Mars was a) not complementary about being woken at 5.30 (it also woke Baby From Mars who was excited about an hour more of Mama and Dada time) and b) refused to believe I hadn’t made a mistake in setting my alarm, despite me being adamant that I had not.

He’s now apologised for thinking bad things of me all this week…