"Sun, 18 Aug 2024 12:11:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
12:11:55
General datetime
2024-08-18 12:11:55Z
For Database
2024-08-18 12:11:55
For HTTP1.1
Sun, 18 Aug 2024 12:11:55 GMT