Step 1
Go to the Os meus calendários page. Click Editar on the calendar which you want to extend.
Before adjusting the time period, please see Why does my calendar only show 6 months (or similar) into the future? for important information.
Go to the Os meus calendários page. Click Editar on the calendar which you want to extend.
Open the Período de tempo tab and adjust the time periods to your liking.
The Período de tempo tab is not shown on phones due to their small screen size. You'll need to adjust this setting with a tablet or a computer. The extended calendar, however, will work fine with phones as well.
Finally, click Salvar.
If you need more than two years (for some calendars, the limit is shorter), a calendar subscription will not work. It is a wrong tool for this problem.
Instead, you may download a calendar (.ics) file which contains events up to 5 years into the future. This file can then be imported into your calendar application.
When downloading a calendar this way, you should understand that
To download a single file with up to 5 years of events into the future,
Updated 8 Feb 2023