../ dmsp_15_ephemeris_20170619.txt 22-Jun-2023 00:34 109469 dmsp_16_ephemeris_20170619.txt 22-Jun-2023 00:34 109500 dmsp_17_ephemeris_20170619.txt 22-Jun-2023 00:34 109515 dmsp_18_ephemeris_20170619.txt 22-Jun-2023 00:34 109625