If आप want to wish "Happy New साल " to someone in Greece, then आप should say: Kali Hronia.
For "Happy New साल Day" in Greek आप should say "Kali Protohronia".
If your friend is called Manolis या Hristos, his nameday is on December 25 (Christmas day). Wish him "Hronia Polla" (Many Happy Returns) for his nameday.
The same applies if your friend is called Vassilis, Yiannis या Fotis. Vassilis nameday is on January 1, Fotis' nameday is on January 6, Yiannis' nameday is on January 7.
During क्रिस्मस holiday period, which lasts from December 24 until January 6, plus a couple of weeks past that, it is a custom in Greece to wish "Hronia Polla" to the people आप meet. So, if आप meet someone in the morning, the proper way to greet him या her is: Kalimera, Hronia Polla! (Good morning, Many Happy Returns).
O क्रिस्मस tree, O क्रिस्मस tree!
How are thy leaves so verdant!
O क्रिस्मस tree, O क्रिस्मस tree,
How are thy leaves so verdant!
Not only in the summertime,
But even in winter is thy prime.
O क्रिस्मस tree, O क्रिस्मस tree,
How are thy leaves so verdant!
O क्रिस्मस tree, O क्रिस्मस tree,
Much pleasure doth thou bring me!
O क्रिस्मस tree, O क्रिस्मस tree,
Much pleasure doth thou bring me!
For every साल the क्रिस्मस tree,
Brings to us all both joy and glee.
O क्रिस्मस tree, O क्रिस्मस tree,
Much pleasure doth thou bring me!
O क्रिस्मस tree, O क्रिस्मस tree,
Thy candles shine out brightly!
O क्रिस्मस tree, O क्रिस्मस tree,
Thy candles shine out brightly!
Each bough doth hold its tiny light,
That makes each toy to sparkle bright.
O क्रिस्मस tree, O क्रिस्मस tree,
Thy candles shine out brightly!
How are thy leaves so verdant!
O क्रिस्मस tree, O क्रिस्मस tree,
How are thy leaves so verdant!
Not only in the summertime,
But even in winter is thy prime.
O क्रिस्मस tree, O क्रिस्मस tree,
How are thy leaves so verdant!
O क्रिस्मस tree, O क्रिस्मस tree,
Much pleasure doth thou bring me!
O क्रिस्मस tree, O क्रिस्मस tree,
Much pleasure doth thou bring me!
For every साल the क्रिस्मस tree,
Brings to us all both joy and glee.
O क्रिस्मस tree, O क्रिस्मस tree,
Much pleasure doth thou bring me!
O क्रिस्मस tree, O क्रिस्मस tree,
Thy candles shine out brightly!
O क्रिस्मस tree, O क्रिस्मस tree,
Thy candles shine out brightly!
Each bough doth hold its tiny light,
That makes each toy to sparkle bright.
O क्रिस्मस tree, O क्रिस्मस tree,
Thy candles shine out brightly!