../ dmsp_15_ephemeris_20230402.txt 22-Jun-2023 00:55 108209 dmsp_16_ephemeris_20230402.txt 22-Jun-2023 00:55 108243 dmsp_17_ephemeris_20230402.txt 22-Jun-2023 00:55 108201 dmsp_18_ephemeris_20230402.txt 22-Jun-2023 00:55 108089