Prime Photo Posting Time: 2:36 P.M. Monday

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(Photo credit: John Sanders/CNN)

Look at your co-workers around 2:30 p.m. on a Monday, and you’re likely to see smiling faces looking over their computer screen.

That’s because that is prime time for Facebook photo posting.

According to The Daily Mail, a new survey out of Britain found 2:36 p.m. on a Monday is peak time for posting pictures on social media.

No one is sure why this time is the most popular. But theories include sharing weekend activities and the post-lunch lull.

The top reasons for sharing include making people smile and feeling closer to friend a family.