Dimensional Standard Year
The Dimensional Standard Year or DSY, is a unit of measurement comprised of exactly 365 days each consisting of exactly 24 hours that are 60 minutes long, with minutes at 60 seconds, and the second decided upon by committee. No known planetary system conforms to DSY, and it is regarded of something of a joke. However, with most terrestrial worlds having a orbital period of close to 1 DSY, it is an effective descriptor. For the vast majority of people, one year is "about" 1 DSY, and when used in large measurements(decades, centuries, millennia) to provide approximate dates it is generally accepted as accurate enough.