Data management information includes: recording time zone information (REC_TM_ZONE) at a time of recording data, indicating a time difference between the world standard time (Greenwich Mean Time) and a standard time in a location where the data of the group data for managing the data management information; first data recording time information indicating a recording time of data first recorded on the data group; and second data recording time information indicating a recording time of data last recorded on the data group, and wherein the reproduction apparatus further includes a unit for specifying respective local recording times in locations where the first recorded data and the last recorded data has been recorded, respectively, while the data is reproduced, in accordance with the first and second data recording time information, the time zone information (TM_ZONE), and the recording time zone information (REC_TM_ZONE) at the data recording time.