When studying the Holy Days verses the “holidays” always focus on God’s Word and what it actually says.

Let me try to simplify these in a comparison:

holidays-------------------------Holy Days

seem to be of the Truth------Reveal the truth about God

not in the Bible---------------mentioned throughout Bible

mix paganism with Truth----pure Word of God/prophetic

corruption of Truth------------pure Truth

man-made---------------------God ordained

profane Jesus' name-----------Glorify Jesus' name

renamed by men-------------named by God for a reason

lead people away-----------point to The Messiah > Jesus

reveal the mind of men---------reveal the mind of God

point to false god's------------point to Jesus

replacements (unholy)---------original > Holy

break The Commandments-----honor The Commandments

plan of men to appease the pagans----"Plan of the Ages"

defiles Christ in practice-----Glorifies Christ in the practice

commanded by men-----------commanded by God

kept by believer and unbeliever alike----believers only

kept by world-------------kept by Jesus and the Apostles

Easter (a pagan goddess name)----FirstFruits (word used for Jesus by Paul)

Note: Easter is actually celebrated by Christians on the correct day and mostly for the right reasons. Only the name is an abomination and the modern practices which have pagan origins.
Jesus actually rose from the dead on a Saturday at sunset*, which was also the beginning of the Holy Day First Fruits which continues through Sunday until sunset.
Also, most of the holiday desecration is in the practice and in the decor or symbols attached to them which are pagan and are related to the worship of false gods.

Deuteronomy 12:31
You shall not worship the Lord your God in that way; for every abomination to the Lord which He hates they have done to their gods;

*http://gracehead.com/index.php/2009/03/22/jesus_fulfills_passover_unleavened_bread_2