"Fri, 21 Jun 2024 22:18:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
22:18:21
General datetime
2024-06-21 22:18:21Z
For Database
2024-06-21 22:18:21
For HTTP1.1
Fri, 21 Jun 2024 22:18:21 GMT