"Fri, 21 Jun 2024 23:18:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
23:18:55
General datetime
2024-06-21 23:18:55Z
For Database
2024-06-21 23:18:55
For HTTP1.1
Fri, 21 Jun 2024 23:18:55 GMT