../ dmsp_15_ephemeris_20200520.txt 22-Jun-2023 00:44 109617 dmsp_16_ephemeris_20200520.txt 22-Jun-2023 00:44 109513 dmsp_17_ephemeris_20200520.txt 22-Jun-2023 00:44 109624 dmsp_18_ephemeris_20200520.txt 22-Jun-2023 00:44 109600