../ dmsp_15_ephemeris_20130320.txt 22-Jun-2023 00:21 108130 dmsp_16_ephemeris_20130320.txt 22-Jun-2023 00:21 108257 dmsp_17_ephemeris_20130320.txt 22-Jun-2023 00:21 108175 dmsp_18_ephemeris_20130320.txt 22-Jun-2023 00:21 108225