Is the mall open today?
Of course, why shouldn't it be?
christian orientated holidays, ( apart from a few indepentant shops or expat owned shops), every store are open
chinese based holidays, many shops are closed, especially independent stores, but some malls are open
I don't know of any major mall than isn't open every day of the year. A small few local shops shut for up to two weeks at Chinese New Year, but that's about it.