"dydd Gwener dydd Sadwrn"

Translation: Friday Saturday

[tahscenery]

This sentence doesn't really make sense :/

[OddayAsad]

The sentence doesn't make sense, and besides who is going to say "Friday Saturday" just like that. I mean just letting people who have encountered it know

[JACOBhH]

Kepler22b is right. You will need a and in the middle