../ dmsp_15_ephemeris_20130509.txt 22-Jun-2023 16:34 109441 dmsp_16_ephemeris_20130509.txt 22-Jun-2023 16:34 109710 dmsp_17_ephemeris_20130509.txt 22-Jun-2023 16:34 109641 dmsp_18_ephemeris_20130509.txt 22-Jun-2023 16:34 109574