The problem that I see is not that you derived a certain date using various methods.

Many people have done that here many times.

The problem is that you have a habit of saying that you received confirmations.

As the letters and confirmations continued others started having them.

Now, many of us have done this before, it isn't the first time.

I like the fact that you show humility in not being dogmatic about these speculations.

And you do generate a lot of interesting debate.

Lets just be more careful about what you consider confirmations and word it a little bit differently.

We all make mistakes, I and many others.

An apology does not need excuses.

I made a mistake, that should be good enough.