If you look through the Scriptures, you will see exactly where they are located. But, you will not see them responding to humans, but instead will only see them doing what God gives them to do. You see, they were not created for our benefit, contrary to the teachings you may have heard.
They should certainly not be any special days for them to be celebrated, because we see in the 10 Commandments that our God is a jealous God. He did not create angels to compete for our favor. He did not create angels to do our work for us. He does send angels to minister to us, but within the realm of service to Him. The perversion of all of your gobbledygook and speculations about the role of Angels is pure hyperbole designed to take your eyes away from the author and finisher of our faith, Jesus Christ.
Colossians 2: ... 18 Do not let anyone who delights in false humility and the worship of angels disqualify you for the prize. Such a person goes into great detail about what he has seen, and his unspiritual mind puffs him up with idle notions .
1 Peter: ...10 Concerning this salvation, the prophets, who spoke of the grace that was to come to you, searched intently and with the greatest care, 11 trying to find out the time and circumstances to which the Spirit of Christ in them was pointing when he predicted the sufferings of the Messiah and the glories that would follow. 12 It was revealed to them that they were not serving themselves but you, when they spoke of the things that have now been told you by those who have preached the gospel to you by the Holy Spirit sent from heaven. Even angels long to look into these things. ...
Col 2:18 Let no man beguile you of your reward in a voluntary humility and worshipping of angels, intruding into those things which he hath not seen, vainly puffed up by his fleshly mind, (KJV)
I actually prefer the KJV in this quote - 'intruding upon things he has no business with' - NO ONE can speak with authority about how the forces of heaven work beyond what the Scriptures detail, which is very little. One would be well met to recall just who and what the fallen ones are, and who it is that requires humility and worship (veneration, prayer) before angels. Then one will be less likely to be beguiled by religious systems that do so.