OK, there's good news and there's bad news.

The bad news is that if you didn't call your mum yesterday, you did indeed miss Mother's Day.

The good news is it only matters if you're from the UK.

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Basically, Sunday, March 26, was Mother's Day in Britain. Mother's Day in the U.S., on the other hand, isn't until Sunday 14 May.

From the looks of all the confused Americans on Twitter, though, quite a few people didn't realise they were on different dates:

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Ultimately, though, this person may have said it best:

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H/T Twitter Moments.

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