"The length of time required for the Earth to complete one orbit around the Sun is the definition of a year."
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Converting Time Units
We frequently need to convert time units in daily life, such as determining how many seconds are in a minute or even how many seconds or minutes are in an hour. Some base unit conversions, such as converting years to seconds or measuring the duration of distant stars, may be more complex than others.
A practical example would be measuring time spent in the same place in one’s city or backyard, for which multiple conversions only units to different units may be more appropriate.
In such situations, research conversion tables and online tools can be invaluable for simplifying the calculations.