../ dmsp_15_ephemeris_20190722.txt 22-Jun-2023 16:56 109599 dmsp_16_ephemeris_20190722.txt 22-Jun-2023 16:56 109522 dmsp_17_ephemeris_20190722.txt 22-Jun-2023 16:56 109688 dmsp_18_ephemeris_20190722.txt 22-Jun-2023 16:56 109392