Night before last, i.e., the second to last nighttime period preceding the present daytime period, or the last nighttime period preceding the present nighttime period.
Timmū'al amih din ohay uggab an immuy ni'tāyaw at ad a''u ya aggūya' ni'yuy.
We stayed up all night the night before last having gone to join the dance and so last night I didn't join in going.
As part of a sentence introducer, or as sentence comment, ohay uggab is preceded either by din, han din or hidin; in a sentence time margin it is preceded by hidin. A specific time of night within the general time designations indicated above may be specified by hi or hidin followed by either a time verb or temporal verb phrase inflected for past tense, or by a time noun.
Hidin ohay uggab hi na'āhom.
Night before last during early evening.
ad abiggat, Time Nouns With Preceding Time Determiners,