EASA NAV(A)basic
What time difference corresponds to the Sun moving through 10° of longitude?
Answer
0:40 h
Explanation
Earth rotates 360° in 24 hours, or 15° per hour. Thus 10° corresponds to 10/15 hours, which is 40 minutes. **Key takeaway:** Each degree of longitude corresponds to four minutes of time. **Glossary:** **Longitude**: Angular position east or west; **UTC**: Coordinated Universal Time, the aviation time reference.
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