../ dmsp_15_ephemeris_20221209.txt 22-Jun-2023 00:54 109221 dmsp_16_ephemeris_20221209.txt 22-Jun-2023 00:54 109291 dmsp_17_ephemeris_20221209.txt 22-Jun-2023 00:54 109195 dmsp_18_ephemeris_20221209.txt 22-Jun-2023 00:54 109331