"Sat, 21 Dec 2024 08:15:42"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
08:15:42
General datetime
2024-12-21 08:15:42Z
For Database
2024-12-21 08:15:42
For HTTP1.1
Sat, 21 Dec 2024 08:15:42 GMT