septennial = 220898481.828192 second (time)
Try converting from "septennial" to autumn, calendar yr (calendar year), century, decade, fortnight, hour, millenium, minute, month, novennial, octennial, olympiad, s (second), sidereal day, sidereal month, sidereal yr (sidereal year), summer, synodic month, week, yr (year), or any combination of units which equate to "time" and represent time.
septennial = 7 calendar yr (calendar year), .07 century, 2,556.7 day, .7 decade, 182.62 fortnight, 61,360.69 hour, .007 millenium, 3,681,641.36 minute, 84 month, .77777778 novennial, .875 octennial, 9.33 pregnancy, .46666667 quindecennial, 2,563.7 sidereal day, 7 sidereal yr (sidereal year), 27.5 spring, 86.58 synodic month, 365.24 week, 28.71 winter, 7 yr (year).
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