"Sun, 18 Aug 2024 06:20:09"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
06:20:09
General datetime
2024-08-18 06:20:09Z
For Database
2024-08-18 06:20:09
For HTTP1.1
Sun, 18 Aug 2024 06:20:09 GMT