According to my calendar the building of Hadrian's Wall began on this day in AD 122. So I think we should celebrate the occasion by taking the day off work. BUT how do they know it started on this date? Do they have Hadrian's diary?
13th September AD 122:
Got up early, picked up the paddies in my chariot and headed off into Northumberland to start work on my wall. Those Picts sure are a pain in the ass though - always trying to climb over the wall. In the end we had to kick a few butts. Will have to put a stop to lunch in the pub - takes forever for the paddies to get back to the job. Should have let McAlpine take the contract.