Unit 9 · Speed and Time Calculation
Ravi's Nairobi Flight — Calculate the Time Zone
Lesson 2 of 2
Harder time questions stack flight legs, layovers, and a time-zone shift — work in one zone first, convert only at the end.
Multi-leg flight + time-zone items sit in the harder band of Selective mocks; the km distance is usually a red herring when durations are already given.
You must add every flying and waiting segment, find landing time in the departure city’s zone, then apply the offset (ahead = add hours when converting forward, behind = subtract).
A traveller flies via a hub with stated leg times and layover. You are told how cities relate in time zones and asked for local clock time at destination.
Best approach: Ignore distance. Total hours = leg₁ + layover + leg₂. Add to departure local time. Then shift to destination zone once. Never mix zones mid-sum.
Question
Ravi is flying home from Nairobi to Tokyo. Tokyo is 6 hours ahead of Nairobi.
His return journey has two legs:
- Flight from Nairobi to Mumbai: 5 hours
- Layover in Mumbai: 2 hours
- Flight from Mumbai to Tokyo: 9 hours
Ravi boards his first flight in Nairobi at 8:00 AM Friday (Nairobi local time).
What day and time does he land in Tokyo?
What day and time does he land in Tokyo?
Select an answer to see the explanation.
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