../ dmsp_15_ephemeris_20180329.txt 22-Jun-2023 00:36 108159 dmsp_16_ephemeris_20180329.txt 22-Jun-2023 00:36 108167 dmsp_17_ephemeris_20180329.txt 22-Jun-2023 00:36 108283 dmsp_18_ephemeris_20180329.txt 22-Jun-2023 00:36 108159