I got a total of 13 with a streak of 7. But I cannot independently verify the existence of events that occurred before I was born. I accept the score as an act of trust in our internet meme institutions.
That was fun. Got the first 16 (which I guess is easier since there are larger gaps early on). Some dates I'm surprised I still remembered so clearly, while other events I was WAY off on, such as the founding of the NSA or NATO.