"Sat, 20 Jul 2024 20:21:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240720
Only TIME
20:21:03
General datetime
2024-07-20 20:21:03Z
For Database
2024-07-20 20:21:03
For HTTP1.1
Sat, 20 Jul 2024 20:21:03 GMT