../ dmsp_15_ephemeris_20210925.txt 22-Jun-2023 17:04 109682 dmsp_16_ephemeris_20210925.txt 22-Jun-2023 17:04 109583 dmsp_17_ephemeris_20210925.txt 22-Jun-2023 17:04 109617 dmsp_18_ephemeris_20210925.txt 22-Jun-2023 17:04 109676