"Sun, 23 Jun 2024 21:42:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240623
Only TIME
21:42:20
General datetime
2024-06-23 21:42:20Z
For Database
2024-06-23 21:42:20
For HTTP1.1
Sun, 23 Jun 2024 21:42:20 GMT