"Sun, 09 Jun 2024 18:21:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240609
Only TIME
18:21:21
General datetime
2024-06-09 18:21:21Z
For Database
2024-06-09 18:21:21
For HTTP1.1
Sun, 09 Jun 2024 18:21:21 GMT