septennial = 220898481.828192 second (time)
Try converting from "septennial" to autumn, calendar yr (calendar year), century, decade, fiscal yr (fiscal year), fortnight, hour, leap yr (leap year), month, octennial, olympiad, quindecennial, quinquennial, s (second), sidereal day, sidereal yr (sidereal year), spring, summer, synodic month, week, 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), .007 millenium, 84 month, .875 octennial, 9.33 pregnancy, .46666667 quindecennial, 220,898,481.83 s (second), 2,563.7 sidereal day, 7 sidereal yr (sidereal year), 27.5 spring, 27.33 summer, 86.58 synodic month, 1,278.35 weekend.
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