../ dmsp_15_ephemeris_20120719.txt 22-Jun-2023 00:20 109497 dmsp_16_ephemeris_20120719.txt 22-Jun-2023 00:20 109579 dmsp_17_ephemeris_20120719.txt 22-Jun-2023 00:20 109584 dmsp_18_ephemeris_20120719.txt 22-Jun-2023 00:20 109581