Unix time is the number of seconds since the 1st of January, 1970 (as this is when Time began). Every time 100 million seconds pass, we celebrate. This is a significant Unix time.
The current Unix time is 1743744761.
The next significant Unix time (on 15 January, 2027, at 08:00 a.m.) occurs in:
93 weeks, 2 hours, 27 minutes, and 18 seconds