Oh nice, the more you know! Kvira probably refers to the same word meaning "week", but seems like there's theories it could derive from Greek mythology as well.

Lots of influence from Greek culture in Georgia for sure. For a fun fact, the Georgian for "Greece" is saberdzneti -- the land of the wise. Berdzeni itself means wise (as well as Greek), but I'm not certain if it's derived from an alternative historical name for the Greek.