../ dmsp_15_ephemeris_20210209.txt 22-Jun-2023 17:01 108104 dmsp_16_ephemeris_20210209.txt 22-Jun-2023 17:01 107996 dmsp_17_ephemeris_20210209.txt 22-Jun-2023 17:01 108002 dmsp_18_ephemeris_20210209.txt 22-Jun-2023 17:01 108082