Time Zone Math Worksheet (Page 2 of 2) in pdf

Time Zone Math Worksheet Page 2

Answer Key

1 – A solar astronomer wants to study a flare erupting on the Sun at 12:00 PM (High

Noon) at the solar observatory in Denver while taking to his colleague in New York at

the same time. At what time should his colleague be ready for the phone call?

Answer: Denver is in the MST Zone, which is 2 hours earlier than the EST. SO,

the New York astronomer needs to be ready at 12:00 + 2:00 = 14:00 which is 2:00

PM EST.

2 – A second solar astronomer in Paris, France also wants to participate in this

research. If the Paris Time Zone is 4 hours ahead of EST, what time should the Paris

astronomer be ready for the same call?

Answer: Paris is 4 hours ahead of EST, so you need to add 4 hours to 12:00 PM

Noon EST to get 16:00 hours which is the same as 4:00 PM Paris Time.

3 – An astronomer sees a solar flare at 2:15 PM EST. A astronomer in Hawaii decides

to go out for breakfast between 8:00 and 8:30 AM HST. If Hawaii Standard Time (HST)

is 3 hours earlier than the PST Zone, did the Hawaiian astronomer get to see the flare?

Answer: The solar flare occurred at 2:15 PM EST. We first convert this to PST by

subtracting 3 hours for the time zone change to get 11:15 AM PST. Then,

continuing westwards, we subtract another 3 hours to get to the Hawaiian Time

Zone, making the time 11:15 AM – 3:00 = 8:15 AM Hawaiian Time. The Hawaiian

astronomer missed the flare because he was still having breakfast and not at the

observatory.

Space Math

Time Zone Math Worksheet Page 2