../ dmsp_15_ephemeris_20211006.txt 22-Jun-2023 17:04 109593 dmsp_16_ephemeris_20211006.txt 22-Jun-2023 17:04 109580 dmsp_17_ephemeris_20211006.txt 22-Jun-2023 17:04 109461 dmsp_18_ephemeris_20211006.txt 22-Jun-2023 17:04 109499