A strange message began appearing in some users' Facebook news feed Thursday morning.
The message that is appearing tells users that they have been friends with some of their Facebook friends for 46 years.
Facebook users were quick to point out the glitch on Twitter.
I just randomly logged onto Facebook, and they told me I'd been friends with someone for 46 years. I'm 32 years old.— ¯\_(ツ)_/¯ (@iheartthesports) December 31, 2015
A Tech Insider commenter who goes by Helene pointed out that the problem may stem from Facebook losing some timestamps for friendships.
"Presumably, Facebook lost some of the timestamps for when friendships were created and the default date on most unix systems is 1/1/1970 GMT. Add some timezone correction to that and you get 12/31/1969," Helene said.
It appears to be a common bug for programmers. Whenever someone makes a date error in a database, it defaults to 12/31/1969. That likely explains why so many people are seeing this weird update in their Facebook feed. Tech Insider has received other tips from readers that say this is likely the cause of Facebook's glitch.
While the company did not confirm that this was the cause, a company spokesperson told Tech Insider that they have identified the bug and are working on a fix.