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Hey everyone! Aaj hum Geography ka ek bahut hi important chapter cover karne wale hain—Latitudes and Longitudes. Hum samjhenge ki hamari dharti (Earth) alag-alag zones mein kyun banti hui hai aur time kaise calculate hota hai. Toh chaliye, shuru karte hain!" The Shape of Earth] "Sabse pehle, ek interesting baat. Hum bachpan se sunte aa rahe hain ki Earth round hai, right? Lekin technically, Earth ka shape ek Geoid hai. Iska matlab yeh poles par thodi flattened hai aur beech se thodi bulging. Isi shape ki wajah se sunlight har jagah alag angle par padti hai The Three Heat Zones "Sunlight ke isi angle ki wajah se bante hain hamare Three Primary Heat Zones: Torrid Zone: Yeh area Tropic of Cancer (23\frac{1}{2}^\circ\text{N}) aur Tropic of Capricorn (23.5) ke beech hota hai. Yahan saal mein kam se kam ek baar suraj bilkul sir ke upar hota hai. Isliye, yeh sabse garm (hottest) zone hai. Temperate Zone: Yeh zones thode 'moderate' hote hain. Yahan suraj kabhi sar ke upar nahi aata, rays thodi slanting hoti hain. Is wajah se yahan charon seasons—Spring, Summer, Autumn aur Winter—kaafi clear dikhte hain. Frigid Zone: Yeh hamare North aur South Poles ke paas wale areas hain. Yahan suraj ki kirne hamesha bahut slanting hoti hain, isliye yahan ki thand extreme hoti hai aur zameen aksar barf se dhaki rehti hai." : Important Numbers to Remember] Total Latitudes kitne hain? 179. Total Longitudes? 360. Aur hamara Equator hamesha 0^\circ Latitude hota hai."