../ dmsp_15_ephemeris_20230331.txt 22-Jun-2023 00:55 108207 dmsp_16_ephemeris_20230331.txt 22-Jun-2023 00:55 108303 dmsp_17_ephemeris_20230331.txt 22-Jun-2023 00:55 108169 dmsp_18_ephemeris_20230331.txt 22-Jun-2023 00:55 108155