@justin @mhoye …and hours. A modest proposal: A UTC day is 86.4 ±0.001 ks, damn it! (Kiloseconds = 16.6̇ minutes ~= quarter of an hour). Speeds of road vehicles, for example, are measured for two purposes: traffic safety and estimating time to get places. For safety purposes (e.g., speed limits) the distance they'll go in the next 3600 seconds is irrelevant, it's the distance they'll go in in human reaction times and braking times which are of the order of seconds (i.e., more than 0.1 s, less than 10 s) so m/s (metres per second) are more relevant. If you measure times of day in ks then m/s = km/ks so the same numeric value can be used for both purposes. And, while we're at it, we can get rid of the kilowatt·hour so measure electricity consumption in MJ (1 kWh = 3.6 MJ). That'd save a near-infinite amount of painful and unnecessary confusion.