../ dmsp_15_ephemeris_20111119.txt 22-Jun-2023 00:18 109438 dmsp_16_ephemeris_20111119.txt 22-Jun-2023 00:18 109402 dmsp_17_ephemeris_20111119.txt 22-Jun-2023 00:18 109432 dmsp_18_ephemeris_20111119.txt 22-Jun-2023 00:18 109476