Estimate time until sunset by sun3/10/2023 The distance from any horizon to the zenith (right above you) is 90 degrees.The distance from the Eastern horizon to the Western horizon is 180 degrees. ![]() WikiMatrix Ephemeris data generated by JPL Horizons indicates that Opportunity would have been able to observe the transit from the start until local sunset at about 19:23 UTC Earth time, while Spirit would have been able to observe it from local sunrise at about 19:38 UTC until the end of.
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