../ dmsp_15_ephemeris_20180612.txt 22-Jun-2023 16:52 109400 dmsp_16_ephemeris_20180612.txt 22-Jun-2023 16:52 109541 dmsp_17_ephemeris_20180612.txt 22-Jun-2023 16:52 109671 dmsp_18_ephemeris_20180612.txt 22-Jun-2023 16:52 109574