| 摘要 |
PURPOSE:To enable adjusting the time at a reference city and indication city without an erroneous operation. CONSTITUTION:Based on the time difference information between a reference city and an indication city obtained with a time difference calculator 2 and reference time information produced with a clock part 3, the time at an indication city is calculated with an indication time calculator 4. Based on the time calculated for an indication city, time is adjusted in a time adjustment part 5. After adjusting time, a reference city change part 6 changes the city number of the reference city stored in a city number memory 1 to the city number of the indicated city. Then, the city number newly identified is made the reference for calculating time difference information in the time difference calculator 2. |
