When the sun casts the shortest shadows of the day, it is noon according to .

a. the time in greenwich, england is also known as .

b. the calendar year has 366 days during a .

c. the sun reaches its highest point closer to 1 p. m. than to noon when our clocks are set to .

d.. was invented to solve train scheduling problems caused by the fact that apparent (and mean) solar time can differ between locations separated by just a few miles.

e the length of the solar day is usually at least a few seconds different from 24 hours, so when we use 24-hour clocks we are keeping track of .