areIntervalsOverlapping: possibility for "RangeError: Invalid interval"

[yarikoptic]

it might relate to some recent reset of the schedule for the env/ohbm -- may be the one cached in the browser was old and then new one kicked in and this was somehow the side effect. But decided to report so there is a record. I have failed to reproduce it later even in incognito mode (in the same browser, chromium)

I went directly (not from home or exhibithall) to https://ohbm.sparkle.space/in/boothcenterforopenneuroscience . It started displaying our booth iframe, and then shortly (just in a few seconds) the whole screen went black blank (not just iframe). console showed

RangeError: Invalid interval
    at areIntervalsOverlapping (index.js:104)
    at event.ts:65
    at event.ts:69
    at Array.filter (<anonymous>)
    at NavBarSchedule.tsx:148
    at Object.Mh [as useMemo] (react-dom.profiling.min.js:162)
    at tt.useMemo (react.production.min.js:25)
    at NavBarSchedule (NavBarSchedule.tsx:145)
    at nh (react-dom.profiling.min.js:153)
    at ii (react-dom.profiling.min.js:175)

[0xdevalias]

Context from Bugsnag:

• https://app.bugsnag.com/sparkle/sparkle-platform/errors/60ce992fed1f7e00073aa43f?event_id=60ce992f007f6c26a7ce0000&i=sk&m=nw