../ dmsp_15_ephemeris_20201002.txt 22-Jun-2023 17:00 109609 dmsp_16_ephemeris_20201002.txt 22-Jun-2023 17:00 109597 dmsp_17_ephemeris_20201002.txt 22-Jun-2023 17:00 109593 dmsp_18_ephemeris_20201002.txt 22-Jun-2023 17:00 109597