"Fri, 09 Feb 2024 20:15:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240209
Only TIME
20:15:21
General datetime
2024-02-09 20:15:21Z
For Database
2024-02-09 20:15:21
For HTTP1.1
Fri, 09 Feb 2024 20:15:21 GMT