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To establish a standard time zone for Guam and the Commonwealth of the Northern Mariana Islands, and for other purposes.

Public Law 106-564 · H.R. 3756 · 106th Congress · began in the House

Signed by Bill Clinton (D) on Dec 23, 2000 · Government Operations and Politics

Sponsor: Rep. Robert Underwood (D-GU)

Cosponsors: None

Passage votes

  • HouseVoice vote
  • SenateUnanimous consent
Data notes

The final version of the law, as each chamber passed it. A chamber that passed it by voice vote or unanimous consent has no count. “Method not stated” means the record does not say how the chamber voted. Where the record has a member-by-member vote, the “Who voted for it” section shows who voted yea.

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Summary

The Congressional Research Service’s plain-language summary of what the law does.

Amends the Calder Act to increase from eight to nine the number of standard time zones in the territory of the United States. Defines the ninth zone (embracing Guam and the Commonwealth of the Northern Mariana Islands), which shall be known as Chamorro standard time.

Amends the Uniform Time Act of 1966 to require Guam and the Northern Mariana Islands to observe daylight savings time.

Committees

The committees the bill was sent to, and what each did with it.

Data notes

A committee links to its page only where it exists in the current Congress; older and renamed committees are named without a link.

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Timeline

From introduction to signing, newest first: the committees, the floor and the president. 10 actions.

  1. Dec 23, 2000Became lawBecame law · Became Public Law No: 106-564.
  2. Became lawBecame law · Signed by President.
  3. Dec 20, 2000PresidentPresident · Presented to President.
  4. Dec 15, 2000FloorFloor · Passed Senate without amendment by Unanimous Consent.
  5. Oct 10, 2000FloorFloor · Motion to reconsider laid on the table Agreed to without objection.
  6. FloorFloor · On motion to suspend the rules and pass the bill Agreed to by voice vote.
  7. FloorFloor · Mr. Oxley moved to suspend the rules and pass the bill.
  8. Mar 8, 2000CommitteeCommittee · Referred to Finance and Hazardous Materials Subcommittee of the House Energy and Commerce Committee
  9. Feb 29, 2000CommitteeCommittee · Referred to House Energy and Commerce Committee
  10. IntroducedIntroduced · Introduced in the House
Data notes

Shows the introduction, each committee and subcommittee step the source dates (referral, hearings, markup, report, discharge), and the floor, conference, presidential and became-law steps. Calendar placements, messages between the chambers, amendments and committee report numbers are not shown for laws before the 108th Congress. Two entries the source lists twice are shown once.

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Official record

The bill’s full text and every action, including introduction and committee steps, are on Congress.gov. Data through Oct 7, 2026.