../ dmsp_15_ephemeris_20201019.txt 22-Jun-2023 17:00 109674 dmsp_16_ephemeris_20201019.txt 22-Jun-2023 17:00 109604 dmsp_17_ephemeris_20201019.txt 22-Jun-2023 17:00 109431 dmsp_18_ephemeris_20201019.txt 22-Jun-2023 17:00 109563