octennial = 252455407.803648 second (time)
Try converting from "octennial" to autumn, calendar yr (calendar year), century, day, decade, fiscal yr (fiscal year), fortnight, leap yr (leap year), minute, month, olympiad, pregnancy, quinquennial, s (second), sidereal day, sidereal month, sidereal yr (sidereal year), summer, weekend, yr (year), or any combination of units which equate to "time" and represent time.
octennial = 8.01 calendar yr (calendar year), .08 century, 2,921.94 day, .8 decade, 8.12 fiscal yr (fiscal year), 208.71 fortnight, 7.98 leap yr (leap year), 96 month, .88888889 novennial, 10.67 pregnancy, 252,455,407.8 s (second), 1.14 septennial, 2,929.94 sidereal day, 106.95 sidereal month, 8 sidereal yr (sidereal year), 31.43 spring, 31.24 summer, 98.95 synodic month, 1,460.97 weekend, 32.82 winter.
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