EASA NAV(A)intermediate
21. Vienna is at 016°34′E and Salzburg at 013°00′E, at approximately equal latitude. How do sunrise and sunset times in UTC compare?
Answer
In Vienna both are about 14 minutes earlier
Explanation
Vienna is about 3.6° farther east; the solar-time difference is approximately 14 minutes. At a fixed UTC reference, sunrise and sunset occur earlier in the east. **Key takeaway:** Eastward longitude corresponds to earlier UTC solar events. **Glossary:** Sunrise: apparent emergence of the Sun above the horizon.
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