Navigation PPLintermediate
Select all correct statements regarding the relationship between longitude and solar time.
Answer
A 15° difference in longitude corresponds to a solar time difference of 1 hour.
Explanation
Earth rotates through `$360^\circ$` in about 24 hours, or `$15^\circ$` per hour. Thus 10° corresponds to 40 minutes and 20° to 80 minutes. **UTC** is a common aviation time reference and does not change with the observer's longitude. **Key takeaway:** Convert longitude to time at four minutes per degree. **Glossary:** **UTC**: Coordinated Universal Time.
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