../ dmsp_15_ephemeris_20210114.txt 22-Jun-2023 16:28 107912 dmsp_16_ephemeris_20210114.txt 22-Jun-2023 16:28 107862 dmsp_17_ephemeris_20210114.txt 22-Jun-2023 16:28 107928 dmsp_18_ephemeris_20210114.txt 22-Jun-2023 16:28 107990