../ dmsp_15_ephemeris_20181129.txt 22-Jun-2023 00:39 109515 dmsp_16_ephemeris_20181129.txt 22-Jun-2023 00:39 109465 dmsp_17_ephemeris_20181129.txt 22-Jun-2023 00:39 109350 dmsp_18_ephemeris_20181129.txt 22-Jun-2023 00:39 109291