Just like the hoaxes by the UFO loons, it falls apart in the details
Just one of many of our "Time traveller's" mistakes is the 'prediction' of the date of the muslim holiday Id al-Fitr - yea, it is on the first of the 10th month- problem is its on the first of the 10th month according to the muslim LUNAR calander.
No real point in digging into the rest to tear this nonsense apart, but I will point out that the messages immediately before that post have mysteriously 'gone missing', and the post editing to make the post link to 'future' HZ posts points to the obvious culprit...