../ dmsp_15_ephemeris_20230412.txt 22-Jun-2023 00:55 109729 dmsp_16_ephemeris_20230412.txt 22-Jun-2023 00:55 109651 dmsp_17_ephemeris_20230412.txt 22-Jun-2023 00:55 109711 dmsp_18_ephemeris_20230412.txt 22-Jun-2023 00:55 109637