../ dmsp_15_ephemeris_20220319.txt 22-Jun-2023 16:38 108181 dmsp_16_ephemeris_20220319.txt 22-Jun-2023 16:38 108171 dmsp_17_ephemeris_20220319.txt 22-Jun-2023 16:38 108192 dmsp_18_ephemeris_20220319.txt 22-Jun-2023 16:38 108161