../ dmsp_15_ephemeris_20181214.txt 22-Jun-2023 00:39 109413 dmsp_16_ephemeris_20181214.txt 22-Jun-2023 00:39 109323 dmsp_17_ephemeris_20181214.txt 22-Jun-2023 00:39 109282 dmsp_18_ephemeris_20181214.txt 22-Jun-2023 00:39 109342