Patent ID: 8634984

Claim:
A navigation system, comprising: a search unit that searches for a route for a recommended route for a mobile body traveling from a start point located in a first mesh area to a destination in a second mesh area adjacent to the first mesh area, a first local standard time in the first mesh area and a second local standard time in the second mesh area being different from each other; a storage unit in which a length of traveling time required to travel through each of the links present in the first mesh area and a length of traveling time required to travel through each of links present in the second mesh area are stored; a determining unit that determines a departure time point at which the mobile body departs from the start point based upon the first local standard time; an estimated passing time point calculation unit that calculates a first estimated passing time point at which the mobile body is expected to pass through a waypoint on the recommended route by adding a sum of lengths of traveling time required to travel through links present in the recommended route within the first mesh area in reference to the storage unit, to the departure time point, the waypoint being present at a border between the first mesh area and the second mesh area; a conversion unit that converts the first estimated passing time point based upon the first local standard time to a second estimated passing time point based upon the second local standard time; an estimated time of arrival calculation unit that calculates an estimated time of arrival at which the mobile body is expected to arrive at the destination based upon the second local standard time by adding a sum of lengths of traveling time required to travel through links present in the recommended route within the second mesh area in reference to the storage unit, to the second estimated passing time point; and a display unit that brings up the estimated time of arrival.