Hebrew

māḥār - next day, tomorrow (HALOT 572)

PCS
*maḫar- - tomorrow (Kogan 2015: 194)
Probably to be directly identified with Akk. maḫru ‘past, bygone time; before, in the presence, in front of’. The alternative derivation from *ˀḫr (Brokelmann 1908:78, 241) is hardly acceptable (Kogan 2015: 194)