../ dmsp_15_ephemeris_20131231.txt 22-Jun-2023 16:36 109444 dmsp_16_ephemeris_20131231.txt 22-Jun-2023 16:36 109327 dmsp_17_ephemeris_20131231.txt 22-Jun-2023 16:36 109450 dmsp_18_ephemeris_20131231.txt 22-Jun-2023 16:36 109333