../ dmsp_15_ephemeris_20161224.txt 22-Jun-2023 00:33 109466 dmsp_16_ephemeris_20161224.txt 22-Jun-2023 00:33 109365 dmsp_17_ephemeris_20161224.txt 22-Jun-2023 00:33 109331 dmsp_18_ephemeris_20161224.txt 22-Jun-2023 00:33 109221