../ dmsp_15_ephemeris_20180214.txt 22-Jun-2023 00:36 108052 dmsp_16_ephemeris_20180214.txt 22-Jun-2023 00:36 108058 dmsp_17_ephemeris_20180214.txt 22-Jun-2023 00:36 108093 dmsp_18_ephemeris_20180214.txt 22-Jun-2023 00:36 108155