septennial = 220898481.828192 second (time)
Try converting from "septennial" to autumn, century, day, decade, fortnight, hour, leap yr (leap year), millenium, month, octennial, pregnancy, s (second), sidereal day, sidereal yr (sidereal year), summer, synodic month, week, weekend, winter, yr (year), or any combination of units which equate to "time" and represent time.
septennial = 28.51 autumn, 7 calendar yr (calendar year), .07 century, .7 decade, 7.1 fiscal yr (fiscal year), 182.62 fortnight, 61,360.69 hour, .007 millenium, 84 month, .77777778 novennial, .875 octennial, 1.75 olympiad, .46666667 quindecennial, 1.4 quinquennial, 220,898,481.83 s (second), 27.5 spring, 27.33 summer, 86.58 synodic month, 1,278.35 weekend, 28.71 winter.
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