../ dmsp_15_ephemeris_20190508.txt 22-Jun-2023 16:30 109469 dmsp_16_ephemeris_20190508.txt 22-Jun-2023 16:30 109531 dmsp_17_ephemeris_20190508.txt 22-Jun-2023 16:30 109712 dmsp_18_ephemeris_20190508.txt 22-Jun-2023 16:30 109517