../ dmsp_15_ephemeris_20190621.txt 22-Jun-2023 16:31 109566 dmsp_16_ephemeris_20190621.txt 22-Jun-2023 16:31 109555 dmsp_17_ephemeris_20190621.txt 22-Jun-2023 16:31 109509 dmsp_18_ephemeris_20190621.txt 22-Jun-2023 16:31 109645