Collosians 2:16-23, " 16 Therefore do not let anyone judge you by what you eat or drink, or with regard to a religious festival, a New Moon celebration or a Sabbath day. 17 These are a shadow of the things that were to come; the reality, however, is found in Christ. 18 Do not let anyone who delights in false humility and the worship of angels disqualify you. Such a person also goes into great detail about what they have seen; they are puffed up with idle notions by their unspiritual mind. 19 They have lost connection with the head, from whom the whole body, supported and held together by its ligaments and sinews, grows as God causes it to grow.
20 Since you died with Christ to the elemental spiritual forces of this world, why, as though you still belonged to the world, do you submit to its rules: 21 “Do not handle! Do not taste! Do not touch!”? 22 These rules, which have to do with things that are all destined to perish with use, are based on merely human commands and teachings. 23 Such regulations indeed have an appearance of wisdom, with their self-imposed worship, their false humility and their harsh treatment of the body, but they lack any value in restraining sensual indulgence."
So, the law of ordinances and feast days are no longer required. You are right _THE_ Sabbath day is still in effect as it has been from the foundation of the world, but the special Sabbath festivals, New Moon celebrations, are no longer required. The ceremonial aspects that point to Christ or the law of ordinances put in place by men and Moses are not in effect. What is still in effect is clearly illuminated in the decalogue.
I appreciate your religious predilections and understand the doctrines of the World Wide Church of God, who still keep the festivals, but it states clearly we are not to judge others regarding them. I do not judge you.