../ dmsp_15_ephemeris_20180323.txt 22-Jun-2023 00:36 108281 dmsp_16_ephemeris_20180323.txt 22-Jun-2023 00:36 108109 dmsp_17_ephemeris_20180323.txt 22-Jun-2023 00:36 108202 dmsp_18_ephemeris_20180323.txt 22-Jun-2023 00:36 108287