"Fri, 21 Jun 2024 18:12:18"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
18:12:18
General datetime
2024-06-21 18:12:18Z
For Database
2024-06-21 18:12:18
For HTTP1.1
Fri, 21 Jun 2024 18:12:18 GMT