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

# Date

Civil date in simplified ISO format, like 2021-05-26

## Schema ID

`https://gobl.org/draft-0/cal/date`

## Validation Rules

| Field               | Test                                           | Validation Code / Message            |
| ------------------- | ---------------------------------------------- | ------------------------------------ |
| <small>Date</small> | <ul class="gobl-test"><li>Valid date</li></ul> | `GOBL-CAL-DATE-01`<br />Invalid date |