../ dmsp_15_ephemeris_20200801.txt 22-Jun-2023 00:44 109588 dmsp_16_ephemeris_20200801.txt 22-Jun-2023 00:44 109559 dmsp_17_ephemeris_20200801.txt 22-Jun-2023 00:44 109554 dmsp_18_ephemeris_20200801.txt 22-Jun-2023 00:44 109553