../ dmsp_15_ephemeris_20190628.txt 22-Jun-2023 00:41 109407 dmsp_16_ephemeris_20190628.txt 22-Jun-2023 00:41 109506 dmsp_17_ephemeris_20190628.txt 22-Jun-2023 00:41 109580 dmsp_18_ephemeris_20190628.txt 22-Jun-2023 00:41 109529