../ dmsp_15_ephemeris_20111223.txt 22-Jun-2023 00:19 109492 dmsp_16_ephemeris_20111223.txt 22-Jun-2023 00:19 109245 dmsp_17_ephemeris_20111223.txt 22-Jun-2023 00:19 109360 dmsp_18_ephemeris_20111223.txt 22-Jun-2023 00:19 109434