../ dmsp_15_ephemeris_20120903.txt 22-Jun-2023 00:20 109613 dmsp_16_ephemeris_20120903.txt 22-Jun-2023 00:20 109662 dmsp_17_ephemeris_20120903.txt 22-Jun-2023 00:20 109669 dmsp_18_ephemeris_20120903.txt 22-Jun-2023 00:20 109534