more details regarding Sitchin's 2087 date

Just wanted to clear things up regarding the dates that Sitchin gave. He said that the year 2087 was the real end-date of the Mayan Calendar according to his calculations. He also said that in the ancient texts it is written that Kukulkan promised to return and he suggested that the end-date was the time he returns. His calculations for Nibiru's return was around 2800-2900 NOT 2087. He wrote this in his book The End of Days. I made a mistake in saying that the Anunnaki came to our planet when Nibiru was CLOSEST to our planet, I shoulve said when it was CLOSE to our planet because Sitchin explained in his last presentation that they didnt necessarily leave their planet to come to ours when Nibiru was closest to Earth in fact this wasn't the best time for them to travel to Earth because that's when Nibiru gains speed and moves fastest around the Sun. So they left their planet ahead of time and speeded ahead of their planet and then came here and then rejoined their planet as it was leaving our Solar System.