../ dmsp_15_ephemeris_20181117.txt 22-Jun-2023 00:39 109512 dmsp_16_ephemeris_20181117.txt 22-Jun-2023 00:39 109448 dmsp_17_ephemeris_20181117.txt 22-Jun-2023 00:39 109404 dmsp_18_ephemeris_20181117.txt 22-Jun-2023 00:39 109313