../ dmsp_15_ephemeris_20211012.txt 22-Jun-2023 00:48 109587 dmsp_16_ephemeris_20211012.txt 22-Jun-2023 00:48 109590 dmsp_17_ephemeris_20211012.txt 22-Jun-2023 00:48 109553 dmsp_18_ephemeris_20211012.txt 22-Jun-2023 00:48 109532