I've only heard of the March 11th date, I have never heard of either of the two other dates you're referring to. I think the March 11th one is the more important one out of all of them.

If it is approved then it becomes a publicly traded ETF like every other ETF iirc, however I don't think it will end up registering itself.

Bitcoin will likely hit its highest price on March 10th, if it is rejected. If it is approved, probably panic buy.

I'm concerned due to the effect of the "Trump Bump". Traditional markets are in a bubble, wall Street is riding high on the idea of corporate tax cuts. At the same time, bitcoin is peaking, ALONG with gold. This makes no sense. A strong dollar and surging gold/btc? One of these is false. Capital movement with BTC/AU usually correlates with a weak dollar. That tells me one of two scenarios are about to occur:

A) traditional stock markets crash when everyone realizes that this is unsustainable. Bitcoin will surge, expect 2000.

B) markets continue to surge while btc stagnates at this peak. Investors will be incentivized to move into traditional sectors, and btc will recede. But temper that with the possible approval of the ETF. No idea of the effect, but undoubtedly will be positive for BTC.

We're past due for a recession and have been for a few years. I think we will have a recession soon. But we can't really say for sure because the stock market rise after the election was not expected based on the "experts". The market is reacting to potential deregulation and corporate tax cuts like you are saying. At some point though, something will bring the markets down and it could be a big drop.

I tend to agree on this, however there is still  other factors that can make the price go up. With the ETF we may see 2k this year.
Without the ETF (Negative decision) I still think we see a price of 1400 at the end of this year.

If i am not wrong then there are two more Bitcoin ETF in the making, so this could be the dates you are asking for. But right now only the winklevoss ETF is important. People expect the ETF to be accepted so you can assume that some of the price rise is because of that. If approved most expect the price to rise further. If not, then many expect a decline (many want to make a quick buck and not hold for a long time, so they will sell) and the question is how low will Bitcoin go. Chances are about 50%, but this is my opinion. Because of this uncertainty we will see some movement. If you want to hold long time (a couple of years) this decision will not make an big impact on your winnings. But if you want sell this year, then this decision will have an impact and i would not recommend to speculate on it. If you want to invest $1000 then buy now for $500 and for another $500 after the decision. This will minimize your risks/reward.

I think the correction have passed https://bitcoinwisdom.com/markets/bitfinex/btcusd and in my speculation, if we will see the green candle in a short time.