../ dmsp_15_ephemeris_20200913.txt 22-Jun-2023 00:45 109708 dmsp_16_ephemeris_20200913.txt 22-Jun-2023 00:45 109586 dmsp_17_ephemeris_20200913.txt 22-Jun-2023 00:45 109684 dmsp_18_ephemeris_20200913.txt 22-Jun-2023 00:45 109624