"Sun, 18 Aug 2024 00:20:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
00:20:15
General datetime
2024-08-18 00:20:15Z
For Database
2024-08-18 00:20:15
For HTTP1.1
Sun, 18 Aug 2024 00:20:15 GMT