Christ Jesus did not command us to keep any specific holy days. We are commanded to partake of Holy Communion with Him though, Paul said as oft as needed, which means as often as we feel the need. So even that does not involve keeping a certain day. Sunday became the Christian sabbath because of the time of Christ's resurrection on Sunday, which is why that became a Christian 'tradition'.
Easter was originally a pagan day which converts brought over into Christianity centuries ago. In Acts 12:4 in the KJV, the word "Easter" there in the Greek is actually pascha meaning 'passover'. Yet the Easter name replaced that idea of passover in Christian tradition.
It's apparent to me (maybe not with others here) that our Lord Jesus did not put the keeping of holy days upon us for The New Covenant because the danger of it becoming like the Old Covenant with how man likes to play religion to outwardly appear holy. He freed us from the religious ordinances of the Old Covenant per Colossians 2. If one feels the need to keep a certain day of the week to serve as a weekly sabbath, nothing wrong with that, but we aren't to make a religion out of it, because that's what the Old Covenant bondage did. Likewise with Easter or Passover or any of the old feast days.
The following Scripture from God through His prophet Hosea was to the ten-tribed "house of Israel" with Ephraim as its head tribe after God had split old Israel into 2 separate kingdoms, and the northern kingdom of Israel had played the spiritual harlot against Him, and He scattered them out of the holy land to among the Gentiles...
Hosea 2:4-11
4 And I will not have mercy upon her children; for they be the children of whoredoms.
5 For their mother hath played the harlot: she that conceived them hath done shamefully: for she said, I will go after my lovers, that give me my bread and my water, my wool and my flax, mine oil and my drink.
6 Therefore, behold, I will hedge up thy way with thorns, and make a wall, that she shall not find her paths.
God is speaking of the children of the northern "kingdom of Israel", put for the ten tribes under Ephraim at Samaria. They had turned to Baal worship instead, so God cast them out of His sight. And during their scattering He is showing that He would hedge up their paths they took from the holy lands, so they would not find their way back once they realized how much better they had it before being scattered out of the holy lands.
7 And she shall follow after her lovers, but she shall not overtake them; and she shall seek them, but shall not find them: then shall she say, I will go and return to my first husband; for then was it better with me than now.
8 For she did not know that I gave her corn, and wine, and oil, and multiplied her silver and gold, which they prepared for Baal.
9 Therefore will I return, and take away my corn in the time thereof, and my wine in the season thereof, and will recover my wool and my flax given to cover her nakedness.
10 And now will I discover her lewdness in the sight of her lovers, and none shall deliver her out of Mine hand.
Indeed the ten tribes were scattered to Assyria and the lands of the Medes, and then further through the countries, where she would have the full Baal worship she had fallen into. By this the ten tribes became known as the ten lost tribes.
11 I will also cause all her mirth to cease, her feast days, her new moons, and her sabbaths, and all her solemn feasts.
(KJV)
The ten tribes scattered among the Gentiles thus would forget their Israelite heritage of the feasts and holy days. The Jews of the southern "kingdom of Judah" which were not part of this would not forget those feasts and holy days. But these ten tribes scattered among the Gentiles became as Gentiles, losing their Israelite heritage. Some of you Gentiles here are probably descended from those ten scattered tribes of Israel and don't even know it.
So has God forever ended His feast and holy days? No. We all... will be commanded to keep and honor them when He returns. And I mean only the ones He said for His people to keep and not those commanded by men's traditions.