../ dmsp_15_ephemeris_20200428.txt 22-Jun-2023 00:43 109535 dmsp_16_ephemeris_20200428.txt 22-Jun-2023 00:43 109635 dmsp_17_ephemeris_20200428.txt 22-Jun-2023 00:43 109603 dmsp_18_ephemeris_20200428.txt 22-Jun-2023 00:43 109532