../ dmsp_15_ephemeris_20180201.txt 22-Jun-2023 00:36 108054 dmsp_16_ephemeris_20180201.txt 22-Jun-2023 00:36 108040 dmsp_17_ephemeris_20180201.txt 22-Jun-2023 00:36 107916 dmsp_18_ephemeris_20180201.txt 22-Jun-2023 00:36 107922