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ADR008 - Date Format

ADR dates must follow ISO 8601 format (YYYY-MM-DD).

Why This Rule Exists

ISO 8601 format:

  • Is unambiguous internationally
  • Sorts correctly alphabetically
  • Is machine-readable
  • Follows industry standards

Format

Dates must be in YYYY-MM-DD format:

Date: 2024-01-15

Or in MADR frontmatter:

---
date: 2024-01-15
---

Examples

Incorrect

Date: January 15, 2024
Date: 15/01/2024
Date: 01-15-2024
Date: 2024/01/15

Correct

Date: 2024-01-15
Date: 2024-12-31
---
date: 2024-01-15
---

Rule Details

  • Rule ID: ADR008
  • Name: adr-date-format
  • Category: Validation
  • Severity: Error
  • Automatic Fix: Not available