How many seconds are contained in a single Julian year for calculation purposes?
Answer
31,557,600 seconds
The total number of seconds in a Julian year is derived by multiplying the number of seconds in a minute (60), the number of minutes in an hour (60), the number of hours in a day (24), and the number of days in a Julian year (365.25). The resulting figure, 31,557,600, serves as the basis for calculating the total distance of a light-year when multiplied by the speed of light.

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How Many Years are in a Light Year? | The Speed of Light - YouTube
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