../ dmsp_15_ephemeris_20200404.txt 22-Jun-2023 00:43 108206 dmsp_16_ephemeris_20200404.txt 22-Jun-2023 00:43 108215 dmsp_17_ephemeris_20200404.txt 22-Jun-2023 00:43 108310 dmsp_18_ephemeris_20200404.txt 22-Jun-2023 00:43 108069