H4283
מחרתם מחרת
מָחֳרָת מָחֳרָתָם ‎ mochŏrâth mochŏrâthâm
mokh-or-awth‘, mokh-or-aw-thawm‘
Feminine from the same as 4279 the morrow or (adverbially) tomorrow: - morrow, next day.