noun or adverb + -ki = when

A few examples:

bu günki işim - my work for today
dünənki vəziyyət - yesterday's situation
bu axşamkı tamaşa - this evening's show
keçan yaydakı hava - last summer's weather

locative noun + ki suffix = the thing+ki that is / are somewhere

To talk about the location of a thing, you use the suffix -ki. Where we would say in English, for example, "The sentences that are below", in Azerbaycani is "The-below-at-that sentences."

Here are more examples, using phrases and in sentences.