../ dmsp_15_ephemeris_20200411.txt 22-Jun-2023 00:43 109724 dmsp_16_ephemeris_20200411.txt 22-Jun-2023 00:43 109545 dmsp_17_ephemeris_20200411.txt 22-Jun-2023 00:43 109767 dmsp_18_ephemeris_20200411.txt 22-Jun-2023 00:43 109625