Step # 1
Mystery Class #10's sunrise time is given as 11:38 (GMT) on
March 20. This means it is late morning in Greenwich when the sun
rises at this site. |
BOX A
11:38 A.M. (3/20) |
Step # 2
Sunrise time at Greenwich on March 20 is 06:04 A.M. |
BOX B
06:04 A.M. (3/20) |
Step # 3
The number of hours and minutes between A and B is 5 hours and 34
minutes |
BOX C
5 hrs. 34 min |
Step # 4
Convert the amount of time in Box C into minutes by multiplying the
hours by 60 and adding the remaining minutes (5 x 60 = 300 + 34 =
334 minutes) |
BOX D
334 minutes |
Step # 5
Figure out the degrees away from Greenwich by dividing the minutes
in Box D by 4 ( 334 divided by 4 = 83.50 degrees ) |
BOX E
83.50 degrees |
Step # 6 Eastern or Western Hemisphere?
To determine the site's approximate longitude you need to know if
it is in the Eastern or Western Hemisphere (i.e East or West of Greenwich,
which is 0 degrees). Here, 11:38 A.M. on 3/20 was later than
06:04 A.M. on 3/20, so this longitude location is West. This means
the site is west of Greenwich, in the Western Hemisphere. |
BOX F
83.5 W |
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