"Fri, 21 Jun 2024 12:34:54"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
12:34:54
General datetime
2024-06-21 12:34:54Z
For Database
2024-06-21 12:34:54
For HTTP1.1
Fri, 21 Jun 2024 12:34:54 GMT