Why is it "bis zum nächsten Mal"?

Question

I got confused by using both *bis* and *zu* there, Why it's "bis **zum** nächsten Mal"?

Answer 1

Hello,

Zum is a contraction. That means a preposition together with the definite article, zu dem, to the.

Bis is more until, to.

Bis zum nächsten Mal means Until to the next time or short until next time.