"Fri, 21 Jun 2024 15:23:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
15:23:04
General datetime
2024-06-21 15:23:04Z
For Database
2024-06-21 15:23:04
For HTTP1.1
Fri, 21 Jun 2024 15:23:04 GMT