[ETL]

one year = 364.25 x 24 x 60 x 60 = 31,536,000 seconds

“the formal definition in the International System of Units (SI):

1 second is defined to be exactly 9,192,631,770 cycles of a Caesium atomic clock.[1][2][3]”

[ETL]

Make that, one year = 365.00 x 24 x 60 x 60 = 31,536,000 seconds

“the formal definition in the International System of Units (SI):

1 second is defined to be exactly 9,192,631,770 cycles of a Caesium atomic clock.[1][2][3]”

Confused myself trying to account for leap years. In any case, the second, as a unit of time, is totally independent of earth’s (or any other body’s) orbital period.