How it works, what you get, limits
What it does
Convert Unix seconds/ms, local time and ISO, so milliseconds are not read as seconds.
How to use
Enter a stamp or a local time, pick a zone, copy the table. 10 digits as seconds, 13 as ms.
What you get
Several writings of the same instant. DST overlap may pick one offset; the page shows UTC offset then.
Options and comparison
Seconds vs ms, time zone.
No lunar calendar, no astronomy.
Limits
DST overlap hours can land on one side of the fold.
FAQ
Seconds vs milliseconds?
About 10 digits as seconds, 13 as ms. Treating ms as seconds jumps the year.
Lunar calendar?
No, and no astronomy.