../ dmsp_15_ephemeris_20210119.txt 22-Jun-2023 00:46 108127 dmsp_16_ephemeris_20210119.txt 22-Jun-2023 00:46 108021 dmsp_17_ephemeris_20210119.txt 22-Jun-2023 00:46 107875 dmsp_18_ephemeris_20210119.txt 22-Jun-2023 00:46 108017