Delhi's and Bengaluru's latitudes are 29°N and 13°N; their longitudes are almost the same, 77°E. How much will be the difference in local time between the two cities?
There will be no significant difference in local time between Delhi and Bengaluru because both cities have almost the same longitude (77°E).
Local time is determined by longitude, not latitude. Since the Earth rotates from west to east, time differences occur due to east-west differences in longitude, not north-south differences in latitude.
Delhi and Bengaluru lie on nearly the same meridian, so the sun reaches its highest point in the sky at approximately the same time in both cities.
The latitude difference (29°N vs 13°N) affects climate and daylight hours across seasons, but not the local time.
Explanation
The chapter explains that local time is determined by longitude, not latitude. The Earth rotates on its axis from west to east, completing one rotation in 24 hours. Places on the same meridian (same longitude) experience noon at the same time, regardless of their latitude. Delhi (29°N, 77°E) and Bengaluru (13°N, 77°E) have nearly identical longitudes, so their local times are the same. Latitude affects climate (Delhi is in the temperate zone while Bengaluru is closer to the equator) but has no effect on local time.
Solution Steps
Step 1: Identify that local time depends on longitude, not latitude
Step 2: Compare longitudes: Delhi 77°E, Bengaluru 77°E
Step 3: Since longitudes are nearly identical, local times are the same
Step 4: Latitude difference (29°N vs 13°N) affects climate, not time
Step 5: Conclusion: No significant difference in local time