Well it definitely makes sense to always return an empty JSON object instead of "nothing". I filed it here: https://oliverbusse.notesx.net/hp.nsf/blogpost.xsp?documentId=301E

[zeromancer1972]

XPagesExtensionLibrary/extlib/lwp/product/runtime/eclipse/plugins/com.ibm.domino.services.calendar/src/com/ibm/domino/services/calendar/resources/EventCollectionResource.java

Line 251 in a174610

// If there are no events in the range, we return HTTP 200, no Content-Type, and

[zeromancer1972]

Well it definitely makes sense to always return an empty JSON object instead of "nothing". I filed it here: https://oliverbusse.notesx.net/hp.nsf/blogpost.xsp?documentId=301E