I understand Michael what you mean.It is true that every day belong to God.As you have said Oct 31 will be good day if you celebrate your daughter's birthday and no scripture tells you you will perish by doing that!
The same day you will be putting yourself in trouble if you practice Halloween right!Now my point is:Xmass was designed by catholic ,connected to their pagan gods,then how can it differ from Halloween?Even if people will do good things;but if are for Halloween then they are wasting their time
Evil foundation can't be used to lay on Godly things
----You Love Jesus?Serve him!-----