../ dmsp_15_ephemeris_20180605.txt 22-Jun-2023 00:37 109552 dmsp_16_ephemeris_20180605.txt 22-Jun-2023 00:37 109551 dmsp_17_ephemeris_20180605.txt 22-Jun-2023 00:37 109634 dmsp_18_ephemeris_20180605.txt 22-Jun-2023 00:37 109566