"Sun, 21 Apr 2024 16:10:44"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240421
Only TIME
16:10:44
General datetime
2024-04-21 16:10:44Z
For Database
2024-04-21 16:10:44
For HTTP1.1
Sun, 21 Apr 2024 16:10:44 GMT