../ dmsp_15_ephemeris_20210620.txt 22-Jun-2023 17:03 109592 dmsp_16_ephemeris_20210620.txt 22-Jun-2023 17:03 109466 dmsp_17_ephemeris_20210620.txt 22-Jun-2023 17:03 109695 dmsp_18_ephemeris_20210620.txt 22-Jun-2023 17:03 109514