NOVELTY - The delivery schedule management system (30) has a hydrogen residual-amount monitor (31) and a management apparatus (40) which receives information from the monitor. Apparatus (40) has a receiver section (41) for determined result, a preparation portion (42) for delivery schedule information, a storage portion (43) for produced delivery scheduled information, and an output portion (44) for delivery schedule information.    USE - For hydrogen storage cartridges of fuel cells used for vehicles.    ADVANTAGE - The delivery schedule management system enables efficient and smooth delivery of hydrogen storage cartridge for every fixed period, without much time and effort. The system enables prompt response to lack of storage hydrogen.    DETAILED DESCRIPTION - The delivery schedule management system (30) has a hydrogen residual-amount monitor (31), which monitors the residual amount of hydrogen in the hydrogen storage cartridge which stores hydrogen supplied to an energy generation apparatus, and a management apparatus (40) which receives information from the monitor through a communication network. A sensor (32) detects the physical quantity for calculating the residual amount of hydrogen. Based on the detected physical quantity, the residual amount of hydrogen of the cartridge is calculated. A monitor-side determination portion (33) determines whether the calculated residual amount of hydrogen is a preset value. A transmission section (35) transmits the determined result by the determination portion to the management apparatus through the communication network. The management apparatus has a receiver section (41) for receiving the determined result through the communication network, a preparation portion (42) for producing the delivery schedule information containing the delivery period which delivers the hydrogen storage cartridge based on the received determined result, a storage portion (43) for storing the produced delivery scheduled information, and an output portion (44) for the delivery schedule information.    INDEPENDENT CLAIMS are included for the following:    (1) terminal device (46); and    (2) delivery schedule management method.    DESCRIPTION OF DRAWING(S) - The figure shows the block diagram of the electrical structure of delivery schedule management system. (Drawing includes non-English language text).    delivery schedule management system (30)    hydrogen residual-amount monitor (31)    sensor (32)    monitor-side determination portion (33)    transmission section (35)    management apparatus (40)    receiver section (41)    preparation portion (42)    storage portion (43)    output portion (44)    terminal device (46)