As the writer notes:
There were attempts to calculate the day, but by the third century Christians realized this was impossible.
It's intriguing how, in contemporary society, we mark events by dates, whereas 2000 years ago, the emphasis was on "who" was Jesus Christ and not on "when" these events took place.
I couldn't agree more. It seems if a time and date can be put to something, that's the proof it actually happened.