../ dmsp_15_ephemeris_20170405.txt 22-Jun-2023 00:34 108182 dmsp_16_ephemeris_20170405.txt 22-Jun-2023 00:34 108212 dmsp_17_ephemeris_20170405.txt 22-Jun-2023 00:34 108378 dmsp_18_ephemeris_20170405.txt 22-Jun-2023 00:34 108258