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A decade is a period of 10 years. The word is derived from the Ancient Greek: δεκάς (transliteration=dekas), which means a group of ten. Other words for spans of years also c ..more definition+
In relation to the base unit of [time] => (seconds), 1 Hipparchic Cycles (HC) is equal to 9593424000 seconds, while 1 Decades (dec) = 315400000 seconds.| 6447000000000 Hipparchic Cycles | to common time units |
|---|---|
| 6447000000000 HC | = 6.1848804528E+22 seconds (s) |
| 6447000000000 HC | = 1.0308134088E+21 minutes (min) |
| 6447000000000 HC | = 1.718022348E+19 hours (hr) |
| 6447000000000 HC | = 7.15842645E+17 days (day) |
| 6447000000000 HC | = 1.02263235E+17 weeks (wk) |
| 6447000000000 HC | = 1.9612127260274E+15 years (yr) |
| 6447000000000 HC | = 2.3534552712329E+16 months (mo) |
| 6447000000000 HC | = 1.9609639989854E+14 decades (dec) |
| 6447000000000 HC | = 19609639989854 centuries (cent) |
| 6447000000000 HC | = 1960963998985.4 millenniums (mill) |