"Sun, 23 Jun 2024 15:59:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240623
Only TIME
15:59:21
General datetime
2024-06-23 15:59:21Z
For Database
2024-06-23 15:59:21
For HTTP1.1
Sun, 23 Jun 2024 15:59:21 GMT