When it is 12.00 noon in India, the time in San Francisco (USA) would be close to

The correct answer is Option 2. This is determined by calculating the longitudinal difference and the direction of travel relative to the Prime Meridian.

India follows Indian Standard Time (IST), which is UTC +5:30. San Francisco follows Pacific Standard Time (PST), which is UTC -8:00. To find the total time difference, we add the absolute values: 5.5 hours (East) + 8 hours (West) = 13.5 hours.

• Since San Francisco is west of India, we must subtract 13.5 hours from the current IST.
• 12:00 noon minus 12 hours equals 12:00 midnight (start of the same day).
• Subtracting the remaining 1.5 hours takes us back to 10:30 PM of the previous day.

During Daylight Saving Time (PDT), the difference is 12.5 hours, making it 11:30 PM of the previous day. Options 3 and 4 are incorrect as they imply an 8.5-hour difference, which does not align with the geographical coordinates of San Francisco.