Can JSON specify a date type?

The JSON standard does not have a separate data type for dates — all values are represented as strings, numbers, objects, arrays, booleans, or null.

To transmit a date in JSON, a string in a specific format is usually used, for example ISO 8601:

{"date": "2024-06-15T13:45:30Z"}

To handle such strings on the application side, they need to be parsed into the appropriate date/time type.

If you need to explicitly specify the type, you can use an additional field or structure, for example:

{"date": {"type": "date", "value": "2024-06-15"}}

But this is a convention between systems, not a built-in JSON feature.