"Sun, 23 Jun 2024 19:16:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240623
Only TIME
19:16:20
General datetime
2024-06-23 19:16:20Z
For Database
2024-06-23 19:16:20
For HTTP1.1
Sun, 23 Jun 2024 19:16:20 GMT