"Sat, 25 May 2024 14:38:18"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240525
Only TIME
14:38:18
General datetime
2024-05-25 14:38:18Z
For Database
2024-05-25 14:38:18
For HTTP1.1
Sat, 25 May 2024 14:38:18 GMT