../ dmsp_15_ephemeris_20230209.txt 22-Jun-2023 00:55 108065 dmsp_16_ephemeris_20230209.txt 22-Jun-2023 00:55 108037 dmsp_17_ephemeris_20230209.txt 22-Jun-2023 00:55 108044 dmsp_18_ephemeris_20230209.txt 22-Jun-2023 00:55 108110