"Sun, 12 May 2024 16:11:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240512
Only TIME
16:11:15
General datetime
2024-05-12 16:11:15Z
For Database
2024-05-12 16:11:15
For HTTP1.1
Sun, 12 May 2024 16:11:15 GMT