Definition:Time/Unit/Quarter-Year
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Definition
The quarter-year is a derived unit of time.
The quarter-year is defined as:
- $91$ days
or
Note that a quarter-year is not actually equal to $\dfrac 1 4$ of a year: $\dfrac {365.2422} 4$ days is $\approx 91.31$ days.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $91$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $91$