"Fri, 21 Jun 2024 06:37:18"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
06:37:18
General datetime
2024-06-21 06:37:18Z
For Database
2024-06-21 06:37:18
For HTTP1.1
Fri, 21 Jun 2024 06:37:18 GMT