I just pushed an update to nostrcal.com/events around it's 'load more' button. I used to think that it was working and that nostr just didn't have the events needed but now that OPA has added their catalog I just knew that wasn't true. For now it's an easy fix of asking for more events on each press but thought will continue to be applied to find a better solution.
Discussion
did you even check the devtools to see what you were getting?
Nope I just assumed it was a mixture of the relays I use not being part of OPA's big push and there being limited events in my grouping (which is still true.) If I didn't try to find Bitcoin Park's upcoming event and momentarily added Primal to my relay list I'd never known at all.