Eid Al-Fitr is a pretty big deal for Muslims. That's probably why the prime minister released a special video message this week.
And also why Ed Miliband released his own video earlier this month. (And Nick Clegg sent one too.)
So it's probably a smart idea of some MPs to send out Eid Mubarak (or happy Eid) cards to their constituents.
But then things started to get a little awkward. A misspelt surname here.
A mistaken religion there.
And concerns from some that they didn't get more cards.
And then some were offended they weren't also sent Christmas cards.
But hey, everyone had a good day, right?
Siraj Datoo is a political reporter for BuzzFeed News and is based in London.
Contact Siraj Datoo at firstname.lastname@example.org.
Got a confidential tip? Submit it here.