good to know someone has data on this! Some gratitude for slow wifi is needed. I was on dialup until 2007.

Hey Chris, Could it have anything to do with when university semesters finish, those dates look like the periods after Semester 2 exams finish and a the sizeable Korean international students start heading home for their break?

Crouching Cathay, Hidden Dragon

also to add, this idea kinda reminds me of what Malaysia Airlines wanted to do with their livery: split the blue to international (which is currently on the A380 livery) and red to domestic... which never happened. 

kinda does. I'm a bit sad to see the Dragonair livery gone, suppose the legacy will live on in the form of the Pokemon which can confused google search results with the airline's previous name.  At least the dragon didn't completely get chopped off from the new livery...