../ dmsp_15_ephemeris_20201031.txt 22-Jun-2023 00:45 109459 dmsp_16_ephemeris_20201031.txt 22-Jun-2023 00:45 109550 dmsp_17_ephemeris_20201031.txt 22-Jun-2023 00:45 109338 dmsp_18_ephemeris_20201031.txt 22-Jun-2023 00:45 109430