lunartime.org

Organization

Bureau International des Poids et Mesures

Intergovernmental metrology organisation that prepares the draft resolutions put to the General Conference on Weights and Measures.

At a glance

Every value in this table comes from the entry in our organizations registry; the links below lead to the pages it connects to.
FieldValue
Short nameBIPM
TypeStandards body
BasedInternational
Address we linkwww.bipm.org
TrackerBIPM and the CGPM
Documents on this site1 document
Papers on this site1 reading
Facts on this page4, each with its own source

Key facts

  • Lunar time is Draft Resolution D and item 17 on the provisional agenda circulated to member states for the 28th CGPM. [1]Official
  • The 28th CGPM meets from 13 to 15 October 2026 at the Palais des Congres de Versailles. [2]Official
  • The CIPM recorded decisions CIPM/115-6 and CIPM/115-14 on the draft resolution, under an earlier letter ordering. [3]Official
  • The CCTF reported in October 2025 that it is working with space agencies on a reference time scale for lunar positioning, navigation and timing. [4]Official

In short

The BIPM is where lunar time meets the treaty system of the metre convention. It prepares the draft resolutions that member states vote on at the General Conference on Weights and Measures, and lunar time is one of them at the 28th conference in October 2026. Its consultative committee for time and frequency, the CCTF, does the technical work with space agencies beforehand.

Every clock value on this site is a model value computed from published rate figures: no lunar time scale has been realized, and nothing on this page is a reading taken from a clock on the Moon[5]Official. The record itself sits inthe list of organizations, and the wider background is inwhat Coordinated Lunar Time is.

What it decides

  1. Which text on lunar time is put to the member states of the metre convention, and in what wording.
  2. Whether the future scale is defined inside the International System of Units rather than beside it.
  3. How the CCTF organises the work with space agencies that would have to realize such a scale.

Where this record connects

Documents

Papers we have read

On the tracker

Other organizations

Sources

  1. Convocation of the 28th meeting of the CGPM (O/Ref AK-CFA-2026-1001) — Bureau International des Poids et Mesures / CIPM, . Official document. Verified .
  2. 28th meeting of the CGPM (2026) — Bureau International des Poids et Mesures, . Official document. Verified .
  3. Meetings of the CIPM: Outcomes — Bureau International des Poids et Mesures, . Official document. Verified .
  4. Latest Updates from 2025 CCTF Meeting — Bureau International des Poids et Mesures, . Official document. Verified .
  5. Resolution on the establishment of a coordinated lunar time standard by international agreement — International Astronomical Union, Commission A3 — XXXII General Assembly, . Official document. Verified .

Last verified