Jacob's well was there. Jesus therefore, being tired from his journey, sat down by the well. It was about the sixth hour{noon}.
It was about the sixth hour ...  The ancient Jews reckoned time from sundown to sunrise, roughly twelve hours of darkness; and from sunrise to sunset, roughly twelve hours of daylight. The Romans and other ancients reckoned time from midnight to noon, and from noon until midnight.  In this light, the "sixth hour" would have been about noon, six hours after sunrise, by the Jewish method of reckoning; or, by the Roman method, it would have been six hours after noon, or about six o'clock in the evening.