../ dmsp_15_ephemeris_20101223.txt 22-Jun-2023 00:16 109450 dmsp_16_ephemeris_20101223.txt 22-Jun-2023 00:16 109421 dmsp_17_ephemeris_20101223.txt 22-Jun-2023 00:16 109255 dmsp_18_ephemeris_20101223.txt 22-Jun-2023 00:16 109355