deutschdictionary
adjective
(ARRIVING OR HAPPENING AT THE EXPECTED TIME)
He is always punctual for work. - Er ist immer rechtzeitig zur Arbeit.
(OCCURRING AT A SUITABLE OR OPPORTUNE TIME)
Your timely response was helpful. - Ihre rechtzeitige Antwort war hilfreich.
adverb
(AT THE SCHEDULED OR EXPECTED TIME)
The train arrives on time. - Der Zug kommt rechtzeitig an.