../ dmsp_15_ephemeris_20200229.txt 22-Jun-2023 00:43 108163 dmsp_16_ephemeris_20200229.txt 22-Jun-2023 00:43 108217 dmsp_17_ephemeris_20200229.txt 22-Jun-2023 00:43 108101 dmsp_18_ephemeris_20200229.txt 22-Jun-2023 00:43 108162