../ dmsp_15_ephemeris_20180109.txt 22-Jun-2023 16:51 106594 dmsp_16_ephemeris_20180109.txt 22-Jun-2023 16:51 106523 dmsp_17_ephemeris_20180109.txt 22-Jun-2023 16:51 106395 dmsp_18_ephemeris_20180109.txt 22-Jun-2023 16:51 106450