"Sat, 21 Sep 2024 10:12:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
10:12:20
General datetime
2024-09-21 10:12:20Z
For Database
2024-09-21 10:12:20
For HTTP1.1
Sat, 21 Sep 2024 10:12:20 GMT