../ dmsp_15_ephemeris_20121005.txt 22-Jun-2023 00:20 109617 dmsp_16_ephemeris_20121005.txt 22-Jun-2023 00:20 109615 dmsp_17_ephemeris_20121005.txt 22-Jun-2023 00:20 109555 dmsp_18_ephemeris_20121005.txt 22-Jun-2023 00:20 109698