what does "jana" mean?
i was watching someting and it said "oneul-reul valentine's day jana"
which i know it means today is valentines day, but can you just say it wihtout the "jana?" and what does it mean?

Question

what does "jana" mean?
i was watching someting and it said "oneul-reul valentine's day jana" 
which i know it means today is valentines day, but can you just say it wihtout the "jana?" and what does it mean?

Answer

The sentence should be "오늘은(o-neur-eun) 발렌타인데이(이)잖아"
"잖아" can be used to remind somebody of something that somebody has forgotten like your sentence.^^/

Please try visiting the following link, 
http://www.talktomeinkorean.com/?s=%EC%9E%96%EC%95%84 ,
you can get more information about "잖아" ^^/

\^o^/