If that's a sole problem, it should be called "Chinese-Japanese-Korean-whateverelse new year" instead. Maybe "East Asian new year" for short. (Not that there are absolutely no discrepancies within them, but they are so similar enough that new year's day almost always coincide.)
walthamstow|16 days ago
This non-problem sounds like it's on the same scale as "The British Isles", a term which is mildly annoying to Irish people but in common use everywhere else.