Time Zones Worksheet Template With Answers

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Key
Phys 102 Astronomy
Name ____________________
T
Z
IME
ONES
h
0
h
30°
2
24 hours = 360 degrees
15
1 hour = __________ degrees
h
90°
6
h
270°
18
4
1 degree = __________ minutes
15
h
180°
12
1
= __________
TIME ZONE
DEGREES OF LONGITUDE
Starting at the Prime Meridian list the longitudes of the centers of western time zones:
Name
Center Longitude
Name
Center Longitude
90° W
W. European
0° W
Central
15° W
105° W
W. Aftrican
Mountain
30° W
120° W
Azores
Pacific
Brazilian
45° W
Yukon
135° W
60° W
150° W
Atlantic
Alaska-Hawaiian
75° W
Eastern
Nome
165° W
The times of astronomical events is often given in C
U
T
(UT
OORDINATED
NIVERSAL
IME
OR
1
UTC)
, which is the time on the prime meridian (Greenwhich, or Western European Time). The
official time-keeper of the United States is the US Naval Observatory. You can use their site to
convert from Universal Time to other time zones (both standard and daylight times)
Convert from Universal Time:
EST = UTC –
5,
EDT = UTC –
4.
to find the EST or EDT of the following events in the spring of 2016:
UT
L
T
(EDT
EST)
OCAL
IME
OR
E
VENT
Date
Time (24 hr)
Date
Time (h:m
/
)
AM
PM
Feb. 22
1:20 pm
Full (Snow) Moon
February 22
18:20
March 8
8:54 pm
New Moon
March 9
1:54
March 20
12:30 am
Vernal Equinox
March 20
4:30
June 20
6:34 pm
Summer Solstice
June 20
22:34
(note that some of the dates may change if an event occurs between midnight UT and Eastern time)
1
Replaced Greenwich Mean Time (GMT) as the World standard for time in 1986. Also known as “Zulu Time,” it is based on atomic meas-
urements rather than the Earth's rotation. Greenwich Mean Time (GMT) is still the standard time zone for the Prime Meridian (Zero
Longitude). From

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