4 – How do you explain this — or these — discrepancy(ies) in time?

Precise time keeping is not evolutionarily advantageous. Precise time keeping was dreamed up to guide ships loaded with goods, soldiers and small pox across the vast and trackless oceans to their precise and unexpecting targets. It carries off feats of extraordinary coincidence bringing men of common business together by cosmic chance in the office where their business can be concluded. It is by this that GPS satellites coordinate their intricate lattice dance and track your movements with forensic, obsessive care, steer cars, find the lost, disperse the mysterious fog of imprecision.

Other things are more important than being on time. We cannot appoint the time at which we meet with the horsemen of mundane existence: love, loss, boredom, pain, birth, death, disease. We can be neither late nor early giving to chance the habits of a plan.