New for 2018-19.. I’m amazed this blog post still gets a lot of readers, and requests! You can also edit the OSD file in LibreOffice and (so it seems) newer versions of Microsoft Office. I have included December 2018 and January 2020.
[From the original 2008 blog post]
(I have some liturgical calendars from prior years which need updating; I’ll add these, too, when I’ve edited them.)