../ dmsp_15_ephemeris_20200409.txt 22-Jun-2023 16:33 109602 dmsp_16_ephemeris_20200409.txt 22-Jun-2023 16:33 109620 dmsp_17_ephemeris_20200409.txt 22-Jun-2023 16:33 109661 dmsp_18_ephemeris_20200409.txt 22-Jun-2023 16:33 109613