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Apparently, where there’s a will, there’s a day.

Looking for something to say, many social media users are timing posts to match novel holidays. Tweed Day was big, as was Uncommon Instrument Awareness Day. Today happens to be National Watermelon Day.

You didn’t know?

Take Cecilia Salas, a 19-year-old college student and prolific user of social media. She told Conor Dougherty that she averaged about one “national day” photo a week. Last week, she showed off her lips for National Lipstick Day, in a photo she took three months ago.

“I was saving it for the perfect moment,” she said.

This may not be the most important tech news of the week — or even the day. We’re keeping our eyes on Uber and Twitter in particular. But at least now you won’t be surprised when watermelons fill your social media feeds today.