../ dmsp_15_ephemeris_20200428.txt 22-Jun-2023 16:59 109535 dmsp_16_ephemeris_20200428.txt 22-Jun-2023 16:59 109635 dmsp_17_ephemeris_20200428.txt 22-Jun-2023 16:59 109603 dmsp_18_ephemeris_20200428.txt 22-Jun-2023 16:59 109532