../ dmsp_15_ephemeris_20220508.txt 22-Jun-2023 00:51 109637 dmsp_16_ephemeris_20220508.txt 22-Jun-2023 00:51 109602 dmsp_17_ephemeris_20220508.txt 22-Jun-2023 00:51 109651 dmsp_18_ephemeris_20220508.txt 22-Jun-2023 00:51 109522