../ dmsp_15_ephemeris_20200505.txt 22-Jun-2023 00:43 109495 dmsp_16_ephemeris_20200505.txt 22-Jun-2023 00:43 109514 dmsp_17_ephemeris_20200505.txt 22-Jun-2023 00:43 109752 dmsp_18_ephemeris_20200505.txt 22-Jun-2023 00:43 109569