../ dmsp_15_ephemeris_20131114.txt 22-Jun-2023 00:23 109461 dmsp_16_ephemeris_20131114.txt 22-Jun-2023 00:23 109403 dmsp_17_ephemeris_20131114.txt 22-Jun-2023 00:23 109537 dmsp_18_ephemeris_20131114.txt 22-Jun-2023 00:23 109556