про срок действия и его раннее расторжение:
The Contract shall be valid from the date of its conclusion (on the later date of signing by the parties) and till performance of obligations by the Parties in full.

заключительные положения
The present Contract comes into force from the moment of its signing by the Parties (the later date of signing by the parties).

как это перевести?
на соледующий дент его подписания Сторонами?

спасибо за помощь!