../ dmsp_15_ephemeris_20210826.txt 22-Jun-2023 00:48 109562 dmsp_16_ephemeris_20210826.txt 22-Jun-2023 00:48 109696 dmsp_17_ephemeris_20210826.txt 22-Jun-2023 00:48 109643 dmsp_18_ephemeris_20210826.txt 22-Jun-2023 00:48 109509