"Sat, 25 May 2024 13:21:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240525
Only TIME
13:21:03
General datetime
2024-05-25 13:21:03Z
For Database
2024-05-25 13:21:03
For HTTP1.1
Sat, 25 May 2024 13:21:03 GMT