What is the time in Japan, when it is 12noon in India 🇮🇳

When it is 12noon in lndia, it is 3:30pm in Japan. Since the Earth rotate on its axis once every 24hours.during which time all parts of the Earth face the sun one by one; I.e.,the the time is 12noon at all places turn by turn. Such a 'time shift 'takes place between many countries. Between India 🇮🇳 and Japan it is 3hours and 30minutes, between India and Malaysia 2hours and 30minutes. With the help of 'time- zone maps ',we can find out the time in other countries. From these maps, we can read the time between places for apart. This is good help, for instance, if you want to say happy birthday to your friend staying in San Francisco, but do not want to disturb him in sleep because there it is eleven o'clock in the night, although it is 11:30am where you reside.