I have a calendar comprising mostly recurrent events. In one place, I query its feed for a short-term view of upcoming events. In another, I ask for a longer chunk of upcoming events. In the latter case, many occurrences of the events are missing from the results; however, the short-term view seems to get them all consistently.

Here are sample queries:

Short-term (two months) http://www.google.com/calendar/feeds/p8ke6r49iois1bdpjvdlj93op0%40group.calendar.google.com/private-a84d573100fcf6cbbf103bf71964c2ac/full?start-min=2007-06-21&start-max=2007-08-21&singleevents=true

Long-term (a year) http://www.google.com/calendar/feeds/p8ke6r49iois1bdpjvdlj93op0%40group.calendar.google.com/private-a84d573100fcf6cbbf103bf71964c2ac/full?start-min=2007-06-21&start-max=2008-07-21&singleevents=true

If you search both result sets for "08-17", you will find them present in the short-term, but absent from the long-term. What's more is that the omitted events seem to be a consistent subset, though I can think of nothing that singles them out. They shouldn't be exceptions to the recurrence, or anything unusual.