../ dmsp_15_ephemeris_20131028.txt 22-Jun-2023 16:36 109469 dmsp_16_ephemeris_20131028.txt 22-Jun-2023 16:36 109493 dmsp_17_ephemeris_20131028.txt 22-Jun-2023 16:36 109536 dmsp_18_ephemeris_20131028.txt 22-Jun-2023 16:36 109555