At 12 noon, Kabir video-calls his cousin, who lives far away in another country

Why

Kabir is imagining time as one giant clock that reads the same everywhere — which is how a single house or a single town works, but not the whole planet. The Earth is a spinning ball, and the Sun can only light up the half facing it at any moment. As the Earth turns, that lit half sweeps around, so 'the middle of the day' happens at different moments in different places — places to the east reach noon earlier, places to the west reach it later. The Earth turns a full 360 degrees in 24 hours, which works out to about 15 degrees of longitude per hour, and that is exactly why the world is divided into 24 time zones. Test it: when it is noon in India, it is roughly the middle of the night in parts of North America, which is halfway around the world — not a broken clock, just the far side of the ball. His cousin is right: local time depends on longitude, so noon in one place can be night in another.