../ dmsp_15_ephemeris_20190611.txt 22-Jun-2023 16:31 109554 dmsp_16_ephemeris_20190611.txt 22-Jun-2023 16:31 109587 dmsp_17_ephemeris_20190611.txt 22-Jun-2023 16:31 109586 dmsp_18_ephemeris_20190611.txt 22-Jun-2023 16:31 109508