"Fri, 21 Jun 2024 23:18:43"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
23:18:43
General datetime
2024-06-21 23:18:43Z
For Database
2024-06-21 23:18:43
For HTTP1.1
Fri, 21 Jun 2024 23:18:43 GMT