YoHours is a website to help OpenStreetMap contributors to add opening hours information on shops or amenities.
In fact, OSM uses a complex syntax for this, and this can be long to write by hand everytime. That's why this tool allows you to create opening hours by simply draging the intervals where the feature is open on the calendar.
Add an interval: drag with your mouse over the calendar
Remove an interval: click on it
Extend an interval: drag the "=" sign on intervals extremities
YoHours is now able to handle opening hours which depends of seasons. You can define hours for specific days, weeks, months or holidays. To do so, start by defining the common opening hours ("All year" tab), then refine by adding a new season (the green "+" tab) and set the opening hours on the new calendar. You can add as many seasons as you want. You can also edit or remove a season by clicking on the pencil and trash buttons, between seasons tabs and calendar.