../ dmsp_15_ephemeris_20200613.txt 22-Jun-2023 00:44 109500 dmsp_16_ephemeris_20200613.txt 22-Jun-2023 00:44 109435 dmsp_17_ephemeris_20200613.txt 22-Jun-2023 00:44 109583 dmsp_18_ephemeris_20200613.txt 22-Jun-2023 00:44 109497