"Fri, 21 Jun 2024 21:20:05"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
21:20:05
General datetime
2024-06-21 21:20:05Z
For Database
2024-06-21 21:20:05
For HTTP1.1
Fri, 21 Jun 2024 21:20:05 GMT