../ dmsp_15_ephemeris_20210624.txt 22-Jun-2023 00:47 109482 dmsp_16_ephemeris_20210624.txt 22-Jun-2023 00:47 109407 dmsp_17_ephemeris_20210624.txt 22-Jun-2023 00:47 109620 dmsp_18_ephemeris_20210624.txt 22-Jun-2023 00:47 109553