../ dmsp_15_ephemeris_20180928.txt 22-Jun-2023 16:29 109585 dmsp_16_ephemeris_20180928.txt 22-Jun-2023 16:29 109565 dmsp_17_ephemeris_20180928.txt 22-Jun-2023 16:29 109630 dmsp_18_ephemeris_20180928.txt 22-Jun-2023 16:29 109558