Find how many hours apart the two zones are. Going east, add the hours; going west, subtract them. For a flight, add the flight time first, then change zones.
time zonea region where clocks show the same time
standard timeclock time without daylight saving
a.m. and p.m.before noon and after noon
elapsed timehow much time passes
Watch for: Adding hours going west instead of subtracting. Forgetting to switch a.m. to p.m. when passing noon. Changing zones but forgetting to add the flight time.
At home: Call or message a relative in another time zone and work out together what time it is there first.
Sample sheet and answer key
Luna's Space Adventure
Grade 4 · Time zones · AK.4.MD.4
NameDate
Astronaut Luna is exploring a far-off corner of space. Solve each problem to help Luna's mission go smoothly!
Read the time zones
Going east the clock is later; going west it is earlier.
Time zone
City
Time
Hawaii
Honolulu
12:00 noon
Alaska
Anchorage
1:00 p.m.
Pacific
Seattle
2:00 p.m.
Mountain
Denver
3:00 p.m.
Central
Chicago
4:00 p.m.
Eastern
New York
5:00 p.m.
When it is 12:00 noon in Honolulu (standard time)
How many hours later is it in New York than in Honolulu?
How many hours apart are New York and Seattle?
What time is it there?
Count the hours between the zones.
It is 1:00 p.m. in Chicago. What time is it in Seattle?
It is 5:00 p.m. in Chicago. What time is it in Seattle?
It is 10:00 a.m. in New York. What time is it in Seattle?
It is 3:00 p.m. in Chicago. What time is it in Denver?
Flights across zones
Add the flight time, then change to the time zone where it lands.
A plane leaves Seattle at 11:00 a.m., and the flight takes 4 hours. What time is it in New York when it lands?
A plane leaves Chicago at 8:00 a.m., and the flight takes 5 hours. What time is it in Denver when it lands?
Grade 4 · Sheet
Luna's Space Adventure
Grade 4 · Time zones · AK.4.MD.4
Answer key
Astronaut Luna is exploring a far-off corner of space. Solve each problem to help Luna's mission go smoothly!
Read the time zones
Going east the clock is later; going west it is earlier.
Time zone
City
Time
Hawaii
Honolulu
12:00 noon
Alaska
Anchorage
1:00 p.m.
Pacific
Seattle
2:00 p.m.
Mountain
Denver
3:00 p.m.
Central
Chicago
4:00 p.m.
Eastern
New York
5:00 p.m.
When it is 12:00 noon in Honolulu (standard time)
How many hours later is it in New York than in Honolulu?5
How many hours apart are New York and Seattle?3
What time is it there?
Count the hours between the zones.
It is 1:00 p.m. in Chicago. What time is it in Seattle?11:00 a.m.
It is 5:00 p.m. in Chicago. What time is it in Seattle?3:00 p.m.
It is 10:00 a.m. in New York. What time is it in Seattle?7:00 a.m.
It is 3:00 p.m. in Chicago. What time is it in Denver?2:00 p.m.
Flights across zones
Add the flight time, then change to the time zone where it lands.
A plane leaves Seattle at 11:00 a.m., and the flight takes 4 hours. What time is it in New York when it lands?6:00 p.m.
A plane leaves Chicago at 8:00 a.m., and the flight takes 5 hours. What time is it in Denver when it lands?12:00 noon
Answer key
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New problems every time, three levels (gentle, core and stretch), themes to pick from, a second page if you want one. Each sheet comes with an answer key and a one-page guide for grown-ups.
