../ dmsp_15_ephemeris_20181102.txt 22-Jun-2023 00:38 109620 dmsp_16_ephemeris_20181102.txt 22-Jun-2023 00:38 109484 dmsp_17_ephemeris_20181102.txt 22-Jun-2023 00:38 109509 dmsp_18_ephemeris_20181102.txt 22-Jun-2023 00:38 109467