../ dmsp_15_ephemeris_20110506.txt 22-Jun-2023 00:17 109589 dmsp_16_ephemeris_20110506.txt 22-Jun-2023 00:17 109655 dmsp_17_ephemeris_20110506.txt 22-Jun-2023 00:17 109674 dmsp_18_ephemeris_20110506.txt 22-Jun-2023 00:17 109506