Errr, we're still allowed to say that here?
Yes. We are also allowed to say:
Happy Chanukkah
Happy Eide
Happy Festival of Diwalli
Happy Solstice
Happy Birthday
and Happy any other day.
That's not discrimination - I'll celebrate all of them,
except Happy PC Day
Tony
--
Tony Roberts
PP-ASEL
VFR OTT
Night
Almost Instrument 
Cessna 172H C-GICE