I did it! Script to compute UNIX time!

RouterOS Scripting
30

I think I figured this out
script does not like this date format that comes from MT changelog
2023-Aug-31 16:55

:put [$datetime2epoch “2023-Aug-31 16:55”]
1672228500

:put [$datetime2epoch “2023-08-31 16:55”]
1693482900