C)10:00 P.M.D)9:56 P.M.
219.On December 1 at 10:00 P.M., the bright star Procyon will just be rising on the eastern horizon. When would this star rise on Christmas Day (24 days later)?
220.The bright star Procyon is seen to rise on the eastern horizon at 10:00 P.M. on December 1. At approximately what time will this star rise one week later, on December 8?
221.A time zone on Earth, defined for convenience as the region over which civil time is the same at all locations, extends over what range of longitude, on average?
222.In general, a sundial is nota good timekeeper because theA)Earth's orbital speed around the ecliptic is variable.B)Earth's rotation rate changes throughout the year.C)Sun's large angular diameter produces a fuzzy shadow.D)sky is often cloudy.
223.In winter, clocks in New York (maintaining civil time, or mean solar time) compared to those in California will be