../ dmsp_15_ephemeris_20191227.txt 22-Jun-2023 16:58 109417 dmsp_16_ephemeris_20191227.txt 22-Jun-2023 16:58 109395 dmsp_17_ephemeris_20191227.txt 22-Jun-2023 16:58 109311 dmsp_18_ephemeris_20191227.txt 22-Jun-2023 16:58 109352