../ dmsp_15_ephemeris_20230228.txt 22-Jun-2023 00:55 108256 dmsp_16_ephemeris_20230228.txt 22-Jun-2023 00:55 108133 dmsp_17_ephemeris_20230228.txt 22-Jun-2023 00:55 108104 dmsp_18_ephemeris_20230228.txt 22-Jun-2023 00:55 108147