Can someone translate this Welsh from a mothers day card?

Ar Sul Y Mamau


Dymuniadau Gorau Am Ddiwrnod Fawn





Thanks!

Can someone translate this Welsh from a mothers day card?
On Mothering Sunday





"Best wishes for a great day." I think the last word's a typo.


It could also, therefore, be: " Best wishes for a good day."
Reply:On mother's day.





Best wishes . The next bit is incorrect with you but i can suggest this,





ar dy ddiwrnod fawr (on you'r big day)