"Fri, 21 Jun 2024 15:34:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
15:34:39
General datetime
2024-06-21 15:34:39Z
For Database
2024-06-21 15:34:39
For HTTP1.1
Fri, 21 Jun 2024 15:34:39 GMT