../ dmsp_15_ephemeris_20210123.txt 22-Jun-2023 00:46 108027 dmsp_16_ephemeris_20210123.txt 22-Jun-2023 00:46 108001 dmsp_17_ephemeris_20210123.txt 22-Jun-2023 00:46 107877 dmsp_18_ephemeris_20210123.txt 22-Jun-2023 00:46 107947