Take one-thousandth of twice the year in which the Soldotna area was first opened for homesteading and then remove one-thousandth of the year in which Kenai was incorporated as a first-class city and subtract this result from the boreal minutes.
Take one-thousandth of twice the year in which Soldotna became a first-class city and then remove one-thousandth of the year of the Swanson River oil discovery and subtract this result from the occident minutes.
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