../ dmsp_15_ephemeris_20210829.txt 22-Jun-2023 00:48 109682 dmsp_16_ephemeris_20210829.txt 22-Jun-2023 00:48 109606 dmsp_17_ephemeris_20210829.txt 22-Jun-2023 00:48 109615 dmsp_18_ephemeris_20210829.txt 22-Jun-2023 00:48 109623