What is the local time in Town X at 45° E, when it is noon at 0°?

To determine the local time in Town X at 45° E when it is noon at 0°, we need to calculate the time difference between the two locations and add it to or subtract it from noon at 0°. Since every 15 degrees of longitude represents one hour of time difference, the longitude difference between 0° and 45° E is 45 ÷ 15 = 3 hours ahead of the 0° time zone. So, if it is noon at 0°, it would be 3:00 pm in Town X (0 + 3 = 3) since Town X is 3 hours ahead of the 0° time zone. Therefore, the answer is 3:00 pm.