"Sun, 21 Apr 2024 18:41:28"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240421
Only TIME
18:41:28
General datetime
2024-04-21 18:41:28Z
For Database
2024-04-21 18:41:28
For HTTP1.1
Sun, 21 Apr 2024 18:41:28 GMT