"Sat, 04 May 2024 21:04:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240504
Only TIME
21:04:04
General datetime
2024-05-04 21:04:04Z
For Database
2024-05-04 21:04:04
For HTTP1.1
Sat, 04 May 2024 21:04:04 GMT