../ dmsp_15_ephemeris_20180320.txt 22-Jun-2023 16:52 108234 dmsp_16_ephemeris_20180320.txt 22-Jun-2023 16:52 108232 dmsp_17_ephemeris_20180320.txt 22-Jun-2023 16:52 108289 dmsp_18_ephemeris_20180320.txt 22-Jun-2023 16:52 108142