Makrūh times for prayer
The Ḥanafī school distinguishes two grades. In the three strict times - sunrise, the zenith, and from the sun's yellowing until Maghrib - prayer is not merely disliked but invalid, obligatory or otherwise, with narrow exceptions (that day's Asr before Maghrib; the funeral that became ready in the window). In the two extended windows - after the entry of Fajr and after Asr - obligatory and missed prayers are fine, but beginning a voluntary prayer is makrūh taḥrīmī, near-prohibited, which this tool renders plainly as "NO" rather than softening it. Other schools grade these differently; select your madhhab below and the matrix follows it.
Rulings differ by madhhab and by what you intend to pray - the live answer below is conditioned on both. Draft pending scholar verification; see the methodology.