quindecennial = 473353889.63184 second (time)
Try converting from "quindecennial" to calendar yr (calendar year), century, day, decade, fiscal yr (fiscal year), fortnight, hour, millenium, minute, novennial, octennial, olympiad, pregnancy, quinquennial, sidereal month, sidereal yr (sidereal year), spring, summer, weekend, yr (year), or any combination of units which equate to "time" and represent time.
quindecennial = 61.1 autumn, 15.01 calendar yr (calendar year), .15 century, 5,478.63 day, 1.5 decade, 15.22 fiscal yr (fiscal year), 391.33 fortnight, 131,487.19 hour, 7,889,231.49 minute, 180 month, 1.88 octennial, 3 quinquennial, 473,353,889.63 s (second), 5,493.63 sidereal day, 15 sidereal yr (sidereal year), 58.94 spring, 185.52 synodic month, 782.66 week, 61.53 winter, 15 yr (year).
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