Seit
Seit is a German word that functions as a temporal preposition and as a conjunction. It expresses the starting point of a time period and the duration that extends to the present. In standard usage it translates to “since” or “for” in English, depending on the context.
As a preposition, seit governs the dative case. It is used with time expressions to indicate duration
As a conjunction, seit introduces a clause that describes a time from the past continuing into the
Usage notes and related forms: Seit contrasts with ab, which marks a point in time starting in
Origin and overview: Seit originates in the German language and has cognates across West Germanic languages.