../ dmsp_15_ephemeris_20210425.txt 22-Jun-2023 16:29 109633 dmsp_16_ephemeris_20210425.txt 22-Jun-2023 16:29 109659 dmsp_17_ephemeris_20210425.txt 22-Jun-2023 16:29 109688 dmsp_18_ephemeris_20210425.txt 22-Jun-2023 16:29 109624