../ dmsp_15_ephemeris_20200714.txt 22-Jun-2023 00:44 109513 dmsp_16_ephemeris_20200714.txt 22-Jun-2023 00:44 109601 dmsp_17_ephemeris_20200714.txt 22-Jun-2023 00:44 109550 dmsp_18_ephemeris_20200714.txt 22-Jun-2023 00:44 109537