mujhe to quarter, past, to and half wala chapter bilkul samajh nahi aaya

quarter us me lgaty h jis me 15min ho jese 7:15 and 6:45 us me quarter use krty h 6:45 mtlb quarter to seven agar 7:15ho tho quarter past seven thik or jese 7:05 ho rhae h usko five past seven agar 6:55ho tho use five to sever bolye ghe or half me jese 7:30h tho half past seven simple tho h