"Sat, 21 Sep 2024 15:12:09"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
15:12:09
General datetime
2024-09-21 15:12:09Z
For Database
2024-09-21 15:12:09
For HTTP1.1
Sat, 21 Sep 2024 15:12:09 GMT