../ dmsp_15_ephemeris_20200911.txt 22-Jun-2023 00:45 109712 dmsp_16_ephemeris_20200911.txt 22-Jun-2023 00:45 109701 dmsp_17_ephemeris_20200911.txt 22-Jun-2023 00:45 109728 dmsp_18_ephemeris_20200911.txt 22-Jun-2023 00:45 109441