IPA: /nɒnˈoʊvərˌlæpɪŋ/
KK: /nɑnˈoʊvərˌlæpɪŋ/
Not covering the same area or space as something else; separate and distinct.
The two schedules are nonoverlapping, so there is no conflict in timing.
Nonoverlapping → It is formed from "non-" (meaning not) and "overlapping" (from "over-" meaning above or beyond and "lapping" from "lap" meaning to cover or fold). The word describes things that do not cover or extend over each other.
Think of 'not' ('non-') covering or extending 'above' ('over-') and 'folding' ('lapping') into each other — that's why nonoverlapping means they do not overlap.