../ dmsp_15_ephemeris_20210130.txt 22-Jun-2023 00:46 108049 dmsp_16_ephemeris_20210130.txt 22-Jun-2023 00:46 108019 dmsp_17_ephemeris_20210130.txt 22-Jun-2023 00:46 107831 dmsp_18_ephemeris_20210130.txt 22-Jun-2023 00:46 108050