../ dmsp_15_ephemeris_20200810.txt 22-Jun-2023 00:44 109596 dmsp_16_ephemeris_20200810.txt 22-Jun-2023 00:44 109733 dmsp_17_ephemeris_20200810.txt 22-Jun-2023 00:44 109672 dmsp_18_ephemeris_20200810.txt 22-Jun-2023 00:44 109557