../ dmsp_15_ephemeris_20120422.txt 22-Jun-2023 00:19 109504 dmsp_16_ephemeris_20120422.txt 22-Jun-2023 00:19 109651 dmsp_17_ephemeris_20120422.txt 22-Jun-2023 00:19 109731 dmsp_18_ephemeris_20120422.txt 22-Jun-2023 00:19 109686