Sidereal years to Septennials conversion
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Sidereal years conversion
The sidereal year is the time taken for the Earth to complete one revolution of its orbit, as measured against a fixed frame of reference (such as the fixed stars, Latin sidera, singular sidus). Its average duration is 365.256363004 mean solar days (365 d 6 h 9 min 9.76 s).
Septennial - lasting or continuing seven years as septennial parliaments. Happening or returning once in every seven years as septennial elections in England.