../ dmsp_15_ephemeris_20180322.txt 22-Jun-2023 00:36 108034 dmsp_16_ephemeris_20180322.txt 22-Jun-2023 00:36 108193 dmsp_17_ephemeris_20180322.txt 22-Jun-2023 00:36 108286 dmsp_18_ephemeris_20180322.txt 22-Jun-2023 00:36 108234