# Date Calc

> Calculate date offsets. Add/subtract days from a date.

- Skill: `javimosch/date-calc` (Agent Skill)
- Install (CLI): `npx skillmds@latest add javimosch/date-calc`
- Raw SKILL.md: https://api.skillmd.com/api/skills/javimosch/date-calc/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: javimosch (https://skillmd.com/u/javimosch)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/javimosch/date-calc

---

# date-calc Plugin
Calculate date offsets. Add/subtract days from a date.
## Usage
- `date calc run 30`