"Fri, 21 Jun 2024 21:30:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
21:30:20
General datetime
2024-06-21 21:30:20Z
For Database
2024-06-21 21:30:20
For HTTP1.1
Fri, 21 Jun 2024 21:30:20 GMT