../ dmsp_15_ephemeris_20120824.txt 22-Jun-2023 00:20 109616 dmsp_16_ephemeris_20120824.txt 22-Jun-2023 00:20 109561 dmsp_17_ephemeris_20120824.txt 22-Jun-2023 00:20 109731 dmsp_18_ephemeris_20120824.txt 22-Jun-2023 00:20 109747