../ dmsp_15_ephemeris_20210527.txt 22-Jun-2023 16:35 109634 dmsp_16_ephemeris_20210527.txt 22-Jun-2023 16:35 109565 dmsp_17_ephemeris_20210527.txt 22-Jun-2023 16:35 109463 dmsp_18_ephemeris_20210527.txt 22-Jun-2023 16:35 109495