../ dmsp_15_ephemeris_20220723.txt 22-Jun-2023 16:39 109510 dmsp_16_ephemeris_20220723.txt 22-Jun-2023 16:39 109607 dmsp_17_ephemeris_20220723.txt 22-Jun-2023 16:39 109580 dmsp_18_ephemeris_20220723.txt 22-Jun-2023 16:39 109591