1. Short title This Act may be cited as the Valley-Wide Noise Relief Act of 2023 . 2. Mandatory nighttime curfews (a) In general Notwithstanding any other provision of law, including any written assurances under section 47107 of title 49, United States Code, an airport sponsor may not be prohibited from, or interfered with, implementing a total or partial mandatory nighttime curfew for an airport of the sponsor that is described in subsection (b). (b) Covered airports An airport described in this section is an airport that— (1) had a voluntary curfew in effect for certain aircraft on November 5, 1990; and (2) was created by an intergovernmental agreement established pursuant to a State statute enacted before November 5, 1990, that, along with the statute, imposes obligations with respect to noise mitigation. (c) Notice requirements (1) In general At least 90 days before implementing a curfew under subsection (a), an airport sponsor shall provide to airport users and other interested parties reasonable notice of— (A) the terms of the curfew; and (B) the penalties for violating the curfew. (2) Reasonable notice An airport sponsor shall be treated as satisfying the requirement of providing reasonable notice under paragraph (1) if the sponsor— (A) includes the terms of the curfew and penalties for violating the curfew on the internet website of the sponsor for the applicable airport