Apache OpenOffice is a free software suite that serves as a open-source substitute for Microsoft Office. As such, you can use it to create a variety of business documents, including calendars.

The program doesn't have a built-in calendar, so if you want to incorporate a calendar into your notebook, you have to create it yourself or use a OneNote template from the internet.

As you can see, it’s easy to create a gorgeous calendar in Photos. But be warned: when you give custom calendars to loved ones, there’s no going back; they’ll expect them yearly. Until next ...