Monzo lives in UTC year round. So for half the year their clock is off by an hour. This can result in direct debits bouncing, because Monzo don’t credit your income in time, or it can result in overdrafts charges when you move money to a pot at 12:30am (after midnight) prior to your income hitting at 3am, but to Monzo’s backend it’s still 11:30pm, so when their clock hits midnight (1am for us brits) you get charged for being in your overdraft for one day. This is in direct contradiction and in violation of their own overdrafts policy.
I took them to the Ombudsman over those pennies and won. I reported them to the FCA as well.
My entire journey with that issue is documented in this thread and begins here: