From verb nyemsap "it is morning", leading to forms nyemsapm "in the morning, when it is morning, tomorrow", nyemsaplly "in the morning" (compare to 'Iipay maaykally), and nyemsapm nyakumakm "the day after tomorrow".
Nyemsap, also nemesap or nyemesap in 'Iipay, can also be a verb meaning "until dawn, all night" when combined with another verb in a sentence.
-m: Different-subject verb suffix often placed on verbs marking time, essentially meaning "when it is...(morning)..."
Compare to nemeshap (nemeshaap) "is white"