../ dmsp_15_ephemeris_20130902.txt 22-Jun-2023 00:22 109542 dmsp_16_ephemeris_20130902.txt 22-Jun-2023 00:22 109755 dmsp_17_ephemeris_20130902.txt 22-Jun-2023 00:22 109821 dmsp_18_ephemeris_20130902.txt 22-Jun-2023 00:22 109704