Hi @Wojciech,
Thank you for your reply.
Unfortunately, SharePoint's calendar can only show content within a month. If you need content from other months you need to switch the month manually. This is due to the design of SharePoint, and we can't change it at the moment.
There are actually many Calendar Apps in the SharePoint App Store and they are available as SPFx created Apps that can be added to SharePoint. You can see if there is a Calendar App for you here, for example SharePoint thym Calendar can show events by quarter.
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