../ dmsp_15_ephemeris_20230410.txt 22-Jun-2023 00:55 109696 dmsp_16_ephemeris_20230410.txt 22-Jun-2023 00:55 109556 dmsp_17_ephemeris_20230410.txt 22-Jun-2023 00:55 109723 dmsp_18_ephemeris_20230410.txt 22-Jun-2023 00:55 109459