Calendar
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Custom Holiday Calendar Builder

Build personal or company holiday calendars with explicit observance rules.

Private by design

Your inputs stay on your device and are not sent to our servers. Optional usage analytics does not receive your files or tool inputs.

Preparing private calendar planner…

How to use Custom Holiday Calendar Builder

  1. Choose the planning range and settings, or try the working sample.
  2. Add or edit your entries, then generate the calendar.
  3. Review the dates, warnings and summary before exporting.
Read the detailed guide →

What are the limits of Custom Holiday Calendar Builder?

No automatic official holiday feed. Each source date is supplied by you. Optional next-Monday or nearest-weekday observance is generated separately and may fall outside the source year. Verify local rules. Data stays in browser memory. No account connection, automatic storage, live holiday feed or background reminders. ICS exports must be imported into your own calendar app.

YOUR BROWSER, YOUR CHOICE