../ dmsp_15_ephemeris_20190727.txt 22-Jun-2023 00:41 109613 dmsp_16_ephemeris_20190727.txt 22-Jun-2023 00:41 109634 dmsp_17_ephemeris_20190727.txt 22-Jun-2023 00:41 109678 dmsp_18_ephemeris_20190727.txt 22-Jun-2023 00:41 109523