../ dmsp_15_ephemeris_20220517.txt 22-Jun-2023 00:51 109669 dmsp_16_ephemeris_20220517.txt 22-Jun-2023 00:51 109635 dmsp_17_ephemeris_20220517.txt 22-Jun-2023 00:51 109665 dmsp_18_ephemeris_20220517.txt 22-Jun-2023 00:51 109423