septennial = 220898481.828192 second (time)
Try converting from "septennial" to autumn, calendar yr (calendar year), century, day, fortnight, hour, leap yr (leap year), month, novennial, octennial, pregnancy, quindecennial, quinquennial, s (second), sidereal day, sidereal yr (sidereal year), spring, synodic month, weekend, yr (year), or any combination of units which equate to "time" and represent time.
septennial = 28.51 autumn, .7 decade, 7.1 fiscal yr (fiscal year), 6.99 leap yr (leap year), .007 millenium, 3,681,641.36 minute, 84 month, .77777778 novennial, .875 octennial, 220,898,481.83 s (second), 2,563.7 sidereal day, 93.58 sidereal month, 7 sidereal yr (sidereal year), 27.5 spring, 27.33 summer, 86.58 synodic month, 365.24 week, 1,278.35 weekend, 28.71 winter, 7 yr (year).
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