../ dmsp_15_ephemeris_20110424.txt 22-Jun-2023 00:17 109668 dmsp_16_ephemeris_20110424.txt 22-Jun-2023 00:17 109665 dmsp_17_ephemeris_20110424.txt 22-Jun-2023 00:17 109703 dmsp_18_ephemeris_20110424.txt 22-Jun-2023 00:17 109521