"Fri, 21 Jun 2024 13:06:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
13:06:23
General datetime
2024-06-21 13:06:23Z
For Database
2024-06-21 13:06:23
For HTTP1.1
Fri, 21 Jun 2024 13:06:23 GMT