In this article I offer you a monthly calendar for 2020 as Excel template and as PDF for free download. As always you can download this template without registration or login.
The calendar consists of 12 Excel worksheets (or registers), one for each month. In the lower part, you can make a few important comments in the Notes section.
In contrast to my weekly or annual calendar, there is more or less space here. If you like it more detailed, you should go back to the calendar in the weekly view.