../ dmsp_15_ephemeris_20200319.txt 22-Jun-2023 00:43 108249 dmsp_16_ephemeris_20200319.txt 22-Jun-2023 00:43 108178 dmsp_17_ephemeris_20200319.txt 22-Jun-2023 00:43 108097 dmsp_18_ephemeris_20200319.txt 22-Jun-2023 00:43 108131