../ dmsp_15_ephemeris_20170910.txt 22-Jun-2023 16:26 109544 dmsp_16_ephemeris_20170910.txt 22-Jun-2023 16:26 109629 dmsp_17_ephemeris_20170910.txt 22-Jun-2023 16:26 109664 dmsp_18_ephemeris_20170910.txt 22-Jun-2023 16:26 109623