../ dmsp_15_ephemeris_20180106.txt 22-Jun-2023 00:36 106650 dmsp_16_ephemeris_20180106.txt 22-Jun-2023 00:36 106535 dmsp_17_ephemeris_20180106.txt 22-Jun-2023 00:36 106373 dmsp_18_ephemeris_20180106.txt 22-Jun-2023 00:36 106405