How long is a fortnight?

Poronkusema (literally: a reindeer piss) is a measurement of distance originating in Northern Finland. It is the distance traveled in a reindeer pulled sleigh, between two instances of reindeer urinating. This distance is 7.5–10 km. Poronkusemaa kuukaudessa (poronkusemas per month) is Finnish equivalent for furlongs per fortnight or Seemeilen pro Woche. Taken for poronkusema the value of 7500 m, and for month 30 d, poronkusemaa kuukaudessa becomes 0.0289252 m/s.