../ dmsp_15_ephemeris_20210327.txt 22-Jun-2023 00:46 108177 dmsp_16_ephemeris_20210327.txt 22-Jun-2023 00:46 108154 dmsp_17_ephemeris_20210327.txt 22-Jun-2023 00:46 108228 dmsp_18_ephemeris_20210327.txt 22-Jun-2023 00:46 108184