The Earth is divided into 360 degrees around the equator for longitude lines. Each degree represents a "time zone" and for every degree, there is a four-minute difference in time.
If it's noon at 16 degrees east, to calculate the time at 24 degrees west, we need to add the time difference for 40 degrees (16 degrees east + 24 degrees west).
Since each degree represents 4 minutes, the time difference would be 40 degrees * 4 minutes/degree = 160 minutes.
So, if it's noon (12:00 PM) at 16 degrees east, then the time at 24 degrees west would be 160 minutes or 2 hours and 40 minutes earlier, which is 9:20 AM.