"Sat, 17 Aug 2024 21:20:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240817
Only TIME
21:20:20
General datetime
2024-08-17 21:20:20Z
For Database
2024-08-17 21:20:20
For HTTP1.1
Sat, 17 Aug 2024 21:20:20 GMT