../ dmsp_15_ephemeris_20200515.txt 22-Jun-2023 16:33 109528 dmsp_16_ephemeris_20200515.txt 22-Jun-2023 16:33 109467 dmsp_17_ephemeris_20200515.txt 22-Jun-2023 16:33 109704 dmsp_18_ephemeris_20200515.txt 22-Jun-2023 16:33 109569