The Open Web Calendar uses ICS/ICal calendars online and displays them in one calendar. You can use it with Nextcloud, Outlook, Google Calendar, Meetup and other calendar systems using the ICS standard.
To merge several calendars, please input the URLs of the ICS calendars here:
You can make additional customizations of the calendar.
To change the title, please input the name of the calendar here:
To change the starting date of the calendar:
To change the first hour of the calendar view:
To change the last hour of the calendar view:
Change time increment in the day & week view:
You can set the language of the calendar.
You can select different skins for the calendar.
Start of the Week
The week may start on Monday or Sunday.
Custom Style with CSS
You can change the color of your calendar and many more properties using CSS. Your customization has priority over the Skin you choose. Below, you can choose from a few customizations we prepared for you.
- You can change the background color of the calendar.
- You can change the color of the elements which can be clicked.
- You can change the background color of the current date.
- If you like to have a different color for the days, you can specify this, too.
- Some days of the calendar have a different color if they are not within the month.
You can specify your own CSS properties if you like.
In some cases, the server takes quite a time to load the calendar. In case the server uses a free plan on Heroku, the server needs to start first.
The Month view is the default. However, you can choose to show a different view in the beginning. Choose one:
It might be that you do not want to show all controls for the users to see. Choose here which controls you would like to display:
The timezone is taken from the browser of the user. If you want your calendar to be fixed in one timezone, you have the option below. Your browser uses this time zone:
Hosting the Specification
The calendar can be generated not only using the URL, but also through a JSON or YAML specification from a file. The customization above generates this specification:You can download this specification and place it somewhere on the web. This way you are still in control over the customization of the calendar after you shared the link, e.g. on GitHub in a Gist.