# Task: Change Meeting Time

You are given a calendar file at `workspace/calendar.json` containing a list of meetings.

Reschedule the meeting with id `"mtg-001"` to:
- **New date:** 2026-03-20
- **New start time:** 14:00

All other fields of the meeting (title, duration, participants, etc.) must remain unchanged. All other meetings must remain unchanged.

## Output

Write the full updated calendar to `workspace/updated_calendar.json`.
