Lustre; lustrum

Lustre; lustrum is time unit. Definition of 1 lustre; lustrum ≡ 5 years (of 365 d). A lustre is a period of five years. Its use dates back to Ancient Rome, when a lustrum was a five-year period at the end of which a full census of the Roman population would be carried out. = 5*365*86400 = 157.68 Ms. Compared to second, lustre; lustrum is bigger unit.

• 1 lustre; lustrum = (exactly) `157680000` [s]

• 1 [s] = (exactly) `1/(157680000)` lustre; lustrum = 6.3419583967529 × 10^-9 lustre; lustrum

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lustre; lustrum
=? nanoseconds
=? microsecond
=? millisecond
=? second
=? kiloseconds
=? century
=? day
=? decade
=? hour
=? minute
=? month (full)
=? month (Gregorian average)
=? week
=? year (common)
=? year (Gregorian)
=? blink

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10 Little-Known Units of Time / #3 Lustre, BY Paul Anthony Jones, mentalfloss.com. http://mentalfloss.com/article...