When Obama joked about Donald Trump being the next president, April 30, 2011, it was a date with 45 numerology, 45 days before Trump’s birthday.
4/30/11 = 4+30+11 = 45
Of course, Donald Trump went on to be number 45.
And don’t forget Trump was announced as president elect on November 9, 2016, the anniversary of the fall of the Berlin Wall.
2016, the 63rd triangular number