وَالْمَغْرِبِ مِنْهُ إِلَى غُرُوبِ الشَّفَقِ الْأَحْمَرِ عَلَى الْمُفْتَى بِهِ، وَالْعِشَاءِ وَالْوِتْرِ مِنْهُ إِلَى الصُّبْحِ
Maghrib begins at sunset and, according to the Mufta-bihi position stated here, ends when the red twilight disappears. Isha then continues until true dawn. Witr shares the night-time window after Isha, but is not intentionally performed before the Isha Fard because their order is required.