../ dmsp_15_ephemeris_20171011.txt 22-Jun-2023 16:50 109594 dmsp_16_ephemeris_20171011.txt 22-Jun-2023 16:50 109552 dmsp_17_ephemeris_20171011.txt 22-Jun-2023 16:50 109608 dmsp_18_ephemeris_20171011.txt 22-Jun-2023 16:50 109492