../ dmsp_15_ephemeris_20210129.txt 22-Jun-2023 00:46 108043 dmsp_16_ephemeris_20210129.txt 22-Jun-2023 00:46 107999 dmsp_17_ephemeris_20210129.txt 22-Jun-2023 00:46 107944 dmsp_18_ephemeris_20210129.txt 22-Jun-2023 00:46 107882