../ dmsp_15_ephemeris_20120923.txt 22-Jun-2023 00:20 109562 dmsp_16_ephemeris_20120923.txt 22-Jun-2023 00:20 109630 dmsp_17_ephemeris_20120923.txt 22-Jun-2023 00:20 109740 dmsp_18_ephemeris_20120923.txt 22-Jun-2023 00:20 109635