../ dmsp_15_ephemeris_20220227.txt 22-Jun-2023 00:50 108153 dmsp_16_ephemeris_20220227.txt 22-Jun-2023 00:50 108220 dmsp_17_ephemeris_20220227.txt 22-Jun-2023 00:50 108068 dmsp_18_ephemeris_20220227.txt 22-Jun-2023 00:50 108157