../ dmsp_15_ephemeris_20120424.txt 22-Jun-2023 00:19 109620 dmsp_16_ephemeris_20120424.txt 22-Jun-2023 00:19 109658 dmsp_17_ephemeris_20120424.txt 22-Jun-2023 00:19 109662 dmsp_18_ephemeris_20120424.txt 22-Jun-2023 00:19 109671