../ dmsp_15_ephemeris_20120910.txt 22-Jun-2023 00:20 109624 dmsp_16_ephemeris_20120910.txt 22-Jun-2023 00:20 109664 dmsp_17_ephemeris_20120910.txt 22-Jun-2023 00:20 109728 dmsp_18_ephemeris_20120910.txt 22-Jun-2023 00:20 109747