"Sat, 03 Aug 2024 20:18:36"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240803
Only TIME
20:18:36
General datetime
2024-08-03 20:18:36Z
For Database
2024-08-03 20:18:36
For HTTP1.1
Sat, 03 Aug 2024 20:18:36 GMT