../ dmsp_15_ephemeris_20210706.txt 22-Jun-2023 16:36 109520 dmsp_16_ephemeris_20210706.txt 22-Jun-2023 16:36 109460 dmsp_17_ephemeris_20210706.txt 22-Jun-2023 16:36 109626 dmsp_18_ephemeris_20210706.txt 22-Jun-2023 16:36 109471