"Sun, 18 Aug 2024 10:18:45"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
10:18:45
General datetime
2024-08-18 10:18:45Z
For Database
2024-08-18 10:18:45
For HTTP1.1
Sun, 18 Aug 2024 10:18:45 GMT