However, here are a few options depending on the context:
General Greetings:
* Shubhkamnayein! (शुभकामनाएं!) - This is a general well-wishing phrase, meaning "Best wishes!"
* Khushiyon ki badhai! (खुशियों की बधाई!) - This means "Congratulations on your happiness!"
Specific Holidays:
* Merry Christmas: Merry Christmas (मेरी क्रिसमस)
* Happy New Year: Shubh Naya Saal (शुभ नया साल)
* Happy Diwali: Shubh Diwali (शुभ दिवाली)
Alternative:
* Suhaana Tyohaar (सुहाना त्यौहार) - This means "Pleasant Festival" and could be a good option if you want to express happiness for the festive season in general.
The best option will depend on who you are addressing and the specific holidays they celebrate.