../ dmsp_15_ephemeris_20190715.txt 22-Jun-2023 00:41 109461 dmsp_16_ephemeris_20190715.txt 22-Jun-2023 00:41 109466 dmsp_17_ephemeris_20190715.txt 22-Jun-2023 00:41 109682 dmsp_18_ephemeris_20190715.txt 22-Jun-2023 00:41 109665