Missouri: Does the state observe daylight saving time?
Missouri observes daylight saving time; no law to change that has been enacted, though the House passed a trigger bill in 2026.
Missouri has no state law exempting itself from daylight saving time, so the federal default applies. In April 2026 the Missouri House passed HB 1758, which would have moved the state to year-round daylight time once Congress allowed it, but it did not become law before the session ended. Other 2025 and 2026 bills for permanent standard time also failed. The status is inferred from federal law and the failed bills.
What the law says
...however, (1) any State that lies entirely within one time zone may by law exempt itself from the provisions of this subsection providing for the advancement of time, but only if that law provides that the entire State (including all political subdivisions thereof) shall observe the standard time otherwise applicable during that period, and (2) any State with parts thereof in more than one time zone may by law exempt either the entire State as provided in (1) or may exempt the entire area of the State lying within any time zone.
Sources
- 15 U.S.C. § 260a (Uniform Time Act, state exemption) Mirror of official text · law.cornell.edu
- Missouri House, HB 1758 (2026) bill summary Official · documents.house.mo.gov
- Missouri House, HB 2092 (2026) bill summary Official · documents.house.mo.gov
- NCSL, Daylight Saving Time State Legislation (updated Oct. 12, 2026) Secondary · ncsl.org
- St. Louis Public Radio, Apr. 28, 2026: House passes HB 1758 Secondary · stlpr.org
- U.S. Department of Transportation: Daylight Saving Time Official · transportation.gov
- Missouri House, HB 1758 (2026) actions: last action 4/28/2026, reported to the Senate Official · documents.house.mo.gov
Confirm with the state
- Agency
- Missouri House of Representatives
- Website
- house.mo.gov
How bordering states compare
- Arkansas Observes DSTArkansas observes daylight saving time and has no enacted law to change that.
- Illinois Observes DSTIllinois observes daylight saving time and has not enacted a law to change that.
- Iowa Observes DSTIowa observes daylight saving time under state law and has not enacted a law to change that.
- Kansas Observes DSTKansas observes daylight saving time and has not enacted a law to change that.
- Kentucky Observes DSTKentucky observes daylight saving time and has not enacted a law to change that.
- Nebraska Observes DSTNebraska observes daylight saving time under state law and has not enacted a year-round time law.
- Oklahoma Observes DST, law to go year-roundOklahoma observes daylight saving time, but a 2024 law will make it year-round if Congress allows.
- Tennessee Observes DST, law to go year-roundTennessee observes daylight saving time and has a 2019 law to stay on it all year once Congress allows it.