../ dmsp_15_ephemeris_20230326.txt 22-Jun-2023 00:55 108144 dmsp_16_ephemeris_20230326.txt 22-Jun-2023 00:55 108110 dmsp_17_ephemeris_20230326.txt 22-Jun-2023 00:55 108149 dmsp_18_ephemeris_20230326.txt 22-Jun-2023 00:55 108224