../ dmsp_15_ephemeris_20210416.txt 22-Jun-2023 17:02 109552 dmsp_16_ephemeris_20210416.txt 22-Jun-2023 17:02 109646 dmsp_17_ephemeris_20210416.txt 22-Jun-2023 17:02 109658 dmsp_18_ephemeris_20210416.txt 22-Jun-2023 17:02 109579