What does Kali Anastasi mean?

Answer 1

"Kali Anastasi" is one of the Greek Easter greetings

A week before you may say "Kalo Pascha" - Good/Happy Easter

A few days before you may say

"Kali Anastasi" - Good/Happy Resurrection (looking forward to the event)

Upon the day you say "Christos Anesti" - Christ is risen.

You wish "Kalo Pascha" especially when the Holy Week starts. You wish "Kali Anastasi" when Easter Sunday is very close, especially after Maundy Thursday and Good Friday. However you can use "Kali Anastasi" only before midnight on Saturday.

After Anastasi ( Resurrection ) at midnight (Easter Eve/Easter Day) you say 'Christos Anesti' - Χριστός Ανέστη
And the other answers 'Truly he is risen' ('Alithos anesti'- Αληθώς ανέστη ).

Purists may say that the Resurrection should be located at dawn, and 'Christos Anesti' should not be said before sunrise, but its celbration is slipped back to midnight.