../ dmsp_15_ephemeris_20111129.txt 22-Jun-2023 00:18 109507 dmsp_16_ephemeris_20111129.txt 22-Jun-2023 00:18 109111 dmsp_17_ephemeris_20111129.txt 22-Jun-2023 00:18 109315 dmsp_18_ephemeris_20111129.txt 22-Jun-2023 00:18 109363