[DouglasKC]

Are you looking for instruction? If you don't know how to celebrate the days that God ordained then I suggest that you do some research on how various Christians observe them.
If I wanted a rabbi I would ask a rabbi. If I were interested in mere human tradition I have lots to choose from.

Where did you ever get the idea that these are merely "human traditions":

Lev 23:1 And the LORD spoke unto Moses, saying, Lev 23:2 Speak unto the children of Israel, and say unto them, Concerning the feasts of the LORD, which ye shall proclaim to be holy convocations, even these are my feasts.

On the one hand you are saying that the law regarding feasts has not changed

I'm not saying that at all. Scripture confirms it. The only reason you think differently is that you are being influenced by human tradition and are too proud to admit that human tradition has led you into error.

and all Christians regardless of their racial background are obligated to observe these feasts,

I have no idea what that means. All Christians should worship the God of Israel. He invented Christianity. Race has nothing to do with anything:

Gal 3:28 There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus.

while on the other hand you are ignoring the details of the law and just placing emphasis in the mere timing of the feasts.

For the umpteenth time, the first century church, as expressed in the book of Hebrews, the same church that every Christian claims to be derived from, spells out exactly what changed in the law between the old covenant and the new covenant. If you wish to ignore the early church that's your problem.

Let's face it that the modern day judaizers are in worse shape than their 1st century cousins since at least those folks had a temple to point the gentiles to in order to place them under the ceremonial law.

So basically you're ignoring the post you're responding to in order to call people "Judaizers" when they actually advocate honoring God by observing days that he commanded us to observe BEFORE there were any Jews? Does that make sense?

Modern judaizers have no such instructions, but are making things up on the fly,

Again, I ask you, what is anyone "making up" when they observe what God has commanded?

[topcat54]

Where did you ever get the idea that these are merely "human traditions":

The human tradition was to attempt to make them binding on the gentiles, and to appropriate them into the new covenant.