"Fri, 21 Jun 2024 17:34:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
17:34:15
General datetime
2024-06-21 17:34:15Z
For Database
2024-06-21 17:34:15
For HTTP1.1
Fri, 21 Jun 2024 17:34:15 GMT