../ dmsp_15_ephemeris_20230406.txt 22-Jun-2023 00:55 108226 dmsp_16_ephemeris_20230406.txt 22-Jun-2023 00:55 108203 dmsp_17_ephemeris_20230406.txt 22-Jun-2023 00:55 108187 dmsp_18_ephemeris_20230406.txt 22-Jun-2023 00:55 108178