../ dmsp_15_ephemeris_20210422.txt 22-Jun-2023 00:46 109657 dmsp_16_ephemeris_20210422.txt 22-Jun-2023 00:46 109583 dmsp_17_ephemeris_20210422.txt 22-Jun-2023 00:46 109582 dmsp_18_ephemeris_20210422.txt 22-Jun-2023 00:46 109589