septennial = 220898481.828192 second
Try converting from "septennial" to calendar yr (calendar year), century, day, decade, fiscal yr (fiscal year), hour, leap yr (leap year), millenium, novennial, octennial, pregnancy, quinquennial, s (second), sidereal day, sidereal month, sidereal yr (sidereal year), spring, synodic month, week, weekend, or any combination of units which equate to "time" and represent time.
septennial = 28.51 autumn, 7 calendar yr (calendar year), .07 century, 2,556.7 day, .7 decade, 182.62 fortnight, 61,360.69 hour, 6.99 leap yr (leap year), 3,681,641.36 minute, 1.75 olympiad, .46666667 quindecennial, 1.4 quinquennial, 220,898,481.83 s (second), 93.58 sidereal month, 27.5 spring, 27.33 summer, 86.58 synodic month, 365.24 week, 28.71 winter, 7 yr (year).
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