"Sat, 21 Sep 2024 19:17:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
19:17:51
General datetime
2024-09-21 19:17:51Z
For Database
2024-09-21 19:17:51
For HTTP1.1
Sat, 21 Sep 2024 19:17:51 GMT