If Ты want to wish "Happy New год " to someone in Greece, then Ты should say: Kali Hronia.
For "Happy New год Day" in Greek Ты should say "Kali Protohronia".
If your friend is called Manolis или 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 или Fotis. Vassilis nameday is on January 1, Fotis' nameday is on January 6, Yiannis' nameday is on January 7.
During Рождество 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 Ты meet. So, if Ты meet someone in the morning, the proper way to greet him или her is: Kalimera, Hronia Polla! (Good morning, Many Happy Returns).
O Рождество tree, O Рождество tree!
How are thy leaves so verdant!
O Рождество tree, O Рождество tree,
How are thy leaves so verdant!
Not only in the summertime,
But even in winter is thy prime.
O Рождество tree, O Рождество tree,
How are thy leaves so verdant!
O Рождество tree, O Рождество tree,
Much pleasure doth thou bring me!
O Рождество tree, O Рождество tree,
Much pleasure doth thou bring me!
For every год the Рождество tree,
Brings to us all both joy and glee.
O Рождество tree, O Рождество tree,
Much pleasure doth thou bring me!
O Рождество tree, O Рождество tree,
Thy candles shine out brightly!
O Рождество tree, O Рождество tree,
Thy candles shine out brightly!
Each bough doth hold its tiny light,
That makes each toy to sparkle bright.
O Рождество tree, O Рождество tree,
Thy candles shine out brightly!
How are thy leaves so verdant!
O Рождество tree, O Рождество tree,
How are thy leaves so verdant!
Not only in the summertime,
But even in winter is thy prime.
O Рождество tree, O Рождество tree,
How are thy leaves so verdant!
O Рождество tree, O Рождество tree,
Much pleasure doth thou bring me!
O Рождество tree, O Рождество tree,
Much pleasure doth thou bring me!
For every год the Рождество tree,
Brings to us all both joy and glee.
O Рождество tree, O Рождество tree,
Much pleasure doth thou bring me!
O Рождество tree, O Рождество tree,
Thy candles shine out brightly!
O Рождество tree, O Рождество tree,
Thy candles shine out brightly!
Each bough doth hold its tiny light,
That makes each toy to sparkle bright.
O Рождество tree, O Рождество tree,
Thy candles shine out brightly!