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Scott Gusler edited this page Feb 11, 2026
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Welcome to the Clockwork integration for Home Assistant! This comprehensive guide will walk you through all the features and calculations available.
- Timespan Calculation
- Offset Calculation
- Datetime Offset
- Date Range Duration
- Season Detection
- Month Detection
- Holiday Countdown
- Between Dates Check
- Outside Dates Check
- Custom Holidays
- Install Clockwork via HACS
- Go to Settings > Devices & Services > Create Automation
- Choose "Clockwork" from the list
- Follow the UI to add your first calculation
Each calculation type has its own configuration options available through the UI. No YAML editing is required!
- No YAML Required: All configuration through user-friendly UI
- Dynamic Updates: Real-time updates for time-based calculations
- Flexible Triggering: Control which state changes trigger offset calculations
- Custom Holidays: Define your own holidays for countdown calculations
- Timezone Aware: Automatic timezone handling for datetime comparisons
- Automation Delays: Use offset calculations to trigger automations after a delay
- Time-Based Automation: Use timespan to measure how long something has been in a state
- Business Hours: Use between dates to check if current time is within business hours
- Seasonal Logic: Use season detection for seasonal automations
- Countdown: Use holiday countdown to create countdown automations