19 January 2038 ยท 03:14:07 UTC
The last second
Many programs count time as seconds since 1970 and keep the count in a signed 32-bit number. This is the largest number it can hold. One second later the first bit turns on, and in a signed number that bit means minus. The second is years away, but a 15-year warranty that starts today already ends after it.
2,147,483,647
19 January 2038, 03:14:07 UTCThe last second a signed 32-bit count can hold.
Then see what real software did with it.
We ran that second through recent software
For some data, 2038 is already here
The date you choose stays in this page.
Check yours
Look for these patterns in your code and schemas. Each replacement shown kept the time in the same run. Where we did not test one, we say so.