../ dmsp_15_ephemeris_20120509.txt 22-Jun-2023 00:19 109643 dmsp_16_ephemeris_20120509.txt 22-Jun-2023 00:19 109586 dmsp_17_ephemeris_20120509.txt 22-Jun-2023 00:19 109585 dmsp_18_ephemeris_20120509.txt 22-Jun-2023 00:19 109596