Neutrino <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi><mml:mi>T</mml:mi></mml:math> violation in the solar sector

In this paper, we place new bounds on $CPT$ violation in the solar neutrino sector analyzing results from experiments and KamLAND. We also discuss sensitivity of next-generation DUNE Hyper-Kamiokande, which will provide accurate measurements oscillation parameters. The joint analysis both further improve precision due to cancellations systematic uncertainties regarding flux. combination with reactor experiment JUNO, bound could be improved by 1 order magnitude comparison current constraints. distinguishability among $CPT$-violating oscillations nonstandard interactions is addressed.