> ## Documentation Index
> Fetch the complete documentation index at: https://docs.spaportal.cz/llms.txt
> Use this file to discover all available pages before exploring further.

# API v1 dates

> Format dates in API v1 requests and responses.

API v1 date fields use `YYYY-MM-DD`.

```txt theme={null}
2026-04-01
2026-04-21
```

Date fields do not include a time or time zone.

## Common fields

| Field        | Meaning                                                       |
| ------------ | ------------------------------------------------------------- |
| `date_from`  | Arrival date, start date, or the beginning of a search range. |
| `date_to`    | Departure date, end date, or the end of a search range.       |
| `start_date` | Check-in date for checkout-date lookup.                       |

For booking and price requests, `date_from` is the arrival date and `date_to` is
the departure date.

The departure date must be after the arrival date.