../ dmsp_15_ephemeris_20170621.txt 22-Jun-2023 00:34 109450 dmsp_16_ephemeris_20170621.txt 22-Jun-2023 00:34 109547 dmsp_17_ephemeris_20170621.txt 22-Jun-2023 00:34 109690 dmsp_18_ephemeris_20170621.txt 22-Jun-2023 00:34 109552