../ dmsp_15_ephemeris_20211003.txt 22-Jun-2023 00:48 109645 dmsp_16_ephemeris_20211003.txt 22-Jun-2023 00:48 109588 dmsp_17_ephemeris_20211003.txt 22-Jun-2023 00:48 109596 dmsp_18_ephemeris_20211003.txt 22-Jun-2023 00:48 109690