../ dmsp_15_ephemeris_20111010.txt 22-Jun-2023 00:18 109587 dmsp_16_ephemeris_20111010.txt 22-Jun-2023 00:18 109560 dmsp_17_ephemeris_20111010.txt 22-Jun-2023 00:18 109460 dmsp_18_ephemeris_20111010.txt 22-Jun-2023 00:18 109578