I think the origin of my "lunar.ics" is:
But I did mix and match, played around with timezones, added something - where I found the rest, I cannot remember.
There are probably more at www.icalshare.com
- see for instance:
Hope that helps.
PS - for a sexier representation, it is of course possible do a search-replace in the .ics and add categories to new moon, full moon, eclipse etc - and then add symbols to display in the calendar (I only assign a tiny star all astro events, not to clutter normal view).
PPS - and there is this one: www.la-grange.net/2002/09/13-MoonPhase.ics