../ dmsp_15_ephemeris_20201007.txt 22-Jun-2023 00:45 109596 dmsp_16_ephemeris_20201007.txt 22-Jun-2023 00:45 109591 dmsp_17_ephemeris_20201007.txt 22-Jun-2023 00:45 109571 dmsp_18_ephemeris_20201007.txt 22-Jun-2023 00:45 109524