Timekeeping is timeless. We count the number of orbits around the Sun from a specific guy's birthday 2000 years ago, our 12 months are named after rulers of an empire that hasn't existed for almost as long, and weekdays are named after the pagan gods that guy replaced. I don't know why there are 7 days in a week, but supposedly there are 86400 seconds in a day because some Bronze Age people liked the numbers 60 and 12.
Even if one day humans have to account for relativity in their commute, their woes will pale in comparison with those of the poor soul who has to add support for it in a C library that only understands (now, 128-bit) Unix timestamps.
Even if one day humans have to account for relativity in their commute, their woes will pale in comparison with those of the poor soul who has to add support for it in a C library that only understands (now, 128-bit) Unix timestamps.