../ dmsp_15_ephemeris_20120911.txt 22-Jun-2023 00:20 109624 dmsp_16_ephemeris_20120911.txt 22-Jun-2023 00:20 109724 dmsp_17_ephemeris_20120911.txt 22-Jun-2023 00:20 109745 dmsp_18_ephemeris_20120911.txt 22-Jun-2023 00:20 109475