Sync n8n Workflow Schedules to Google Calendar
Sync n8n Workflow Schedules to Google Calendar Reads every workflow on your n8n instance every 30 minutes, extracts their schedule triggers, and keeps a matching recurring event on Google Calendar — one event per workflow, forever in sync. How it works Schedule Trigger (30 min) → GET /api/v1/workflows — fetch all workflows → Code: parsing — extract scheduleTrigger / cron nodes → Sheets: Lookup — read saved state (schedule, On Calendar, EventID) → Code: detect changes — create / update / skip ├─ create → build RRULE payload → Create event → write EventID to Sheets └─ update → delete old event (parallel) + create new event → write to Sheets State is stored in a Google Sheets tab (n8n Scheduling). The sheet acts as the single source of truth between runs. What gets a Calendar event | Schedule type | Result | | -------------------------------------- | ---------------------------------------------------------- | | Daily | DAILY recurring event | | Weekly (with or without specific days) | WEEKLY recurring event | | Monthly | MONTHLY recurring event | | Hourly | 1 DAILY event at 00:MM (not 24 — avoids GCal rate limit) | | Cron / minutely | Skipped — not supported by Google Calendar RRULE | | This workflow itself | Always skipped | Prerequisites n8n instance with API enabled Google Cloud project with: Service Account (for Sheets — never expires) OAuth 2.0 client (for Google Calendar — expires periodically) A Google Sheets spreadsheet shared with the Service Account A Google Calendar to write events to Credentials | n8n credential type | Used for | | -------------------------- | ------------------------------------------ | | n8n API | Reading the workflow list | | Google Calendar OAuth2 API | Creating / deleting Calendar events | | Google Service Account | Reading and writing the Sheets state store | > ⚠️ The Google Calendar OAuth2 credential expires. Reconnect it from Settings → Credentials when Calendar nodes start failing. Setup Full step-by-step setup in documentation.md. Known limits OAuth token expiry breaks sections D/E silently — set up the error workflow to get notified Hourly schedules map to a single daily event (label includes ogni ora :MM) The disconnected Webhook sub-flow (section F) is a manual maintenance utility — not part of the main pipeline. An n8n automation workflow template by Paolo Ronco.
Paolo Ronco
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free
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