freedom ⬅️ 🦦 ➡️ theia impact
y2k was caused by early software systems storing years as only two digits.
At the year 2000, the year 99 would tick over to 00, which would be read by systems as 1900 and cause airplanes to fall out of the sky, or something
It was largely a non event, as most critical systems like banks and governments fixed their systems beforehand.

y2k38 is the sequel, caused by another issue in computers keeping time.
32-bit systems count the seconds from Jan 01 1970 as a 32 bit integer to know the time. In decimal, this is 2,147,483,647 seconds, which lands the clocks ticking over on Jan 19 2038 03:14:07 UTC.
The next second will overflow the value to the negative value, ending up in December of 1901.
Unfortunately if you were looking for something exciting, this will be another non event. 64-bit systems can keep time for billions of years, and we have plenty of years left to switch the airplanes over.
There should be at least one or two fun glitches though, so set your phone reminder now.
freedom ⬅️ 🦦 ➡️ theia impact