../ dmsp_15_ephemeris_20120428.txt 22-Jun-2023 00:19 109413 dmsp_16_ephemeris_20120428.txt 22-Jun-2023 00:19 109621 dmsp_17_ephemeris_20120428.txt 22-Jun-2023 00:19 109622 dmsp_18_ephemeris_20120428.txt 22-Jun-2023 00:19 109529