../ dmsp_15_ephemeris_20150721.txt 22-Jun-2023 16:20 109424 dmsp_16_ephemeris_20150721.txt 22-Jun-2023 16:20 109678 dmsp_17_ephemeris_20150721.txt 22-Jun-2023 16:20 109721 dmsp_18_ephemeris_20150721.txt 22-Jun-2023 16:20 109653 dmsp_19_ephemeris_20150721.txt 22-Jun-2023 16:20 109644