../ dmsp_15_ephemeris_20111112.txt 22-Jun-2023 00:18 109389 dmsp_16_ephemeris_20111112.txt 22-Jun-2023 00:18 109467 dmsp_17_ephemeris_20111112.txt 22-Jun-2023 00:18 109499 dmsp_18_ephemeris_20111112.txt 22-Jun-2023 00:18 109461