"Sun, 21 Apr 2024 12:13:48"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240421
Only TIME
12:13:48
General datetime
2024-04-21 12:13:48Z
For Database
2024-04-21 12:13:48
For HTTP1.1
Sun, 21 Apr 2024 12:13:48 GMT