../ dmsp_15_ephemeris_20211228.txt 22-Jun-2023 00:49 109373 dmsp_16_ephemeris_20211228.txt 22-Jun-2023 00:49 109453 dmsp_17_ephemeris_20211228.txt 22-Jun-2023 00:49 109161 dmsp_18_ephemeris_20211228.txt 22-Jun-2023 00:49 109354