../ dmsp_15_ephemeris_20210203.txt 22-Jun-2023 00:46 108079 dmsp_16_ephemeris_20210203.txt 22-Jun-2023 00:46 108146 dmsp_17_ephemeris_20210203.txt 22-Jun-2023 00:46 107968 dmsp_18_ephemeris_20210203.txt 22-Jun-2023 00:46 108093