../ dmsp_15_ephemeris_20180703.txt 22-Jun-2023 00:37 109438 dmsp_16_ephemeris_20180703.txt 22-Jun-2023 00:37 109516 dmsp_17_ephemeris_20180703.txt 22-Jun-2023 00:37 109661 dmsp_18_ephemeris_20180703.txt 22-Jun-2023 00:37 109543