The Office of Management and Budget on Sunday convened an interagency working group to determine whether the American public has, in a measurable sense, moved on from the recent war with Iran, with officials saying the group’s findings would help calibrate the tone of forthcoming federal communications, including the president’s Memorial Day remarks.

The Interagency Working Group on Post-Conflict Public Disposition, or IWG-PCPD, will draw 22 staff members from OMB, the Council of Economic Advisers, the Department of Veterans Affairs, the Department of Homeland Security, the Office of National Drug Control Policy and the U.S. Postal Service, according to a charter circulated Friday and reviewed by reporters. Its mandate, the charter says, is to “characterize, in quantitative and qualitative terms, the present national disposition with respect to the events of March and April 2026, and to recommend appropriate adjustments to federal posture.”

Initial findings are expected before Memorial Day. A more comprehensive report will follow before Labor Day, officials said.

“It is the position of the administration that the country is doing fine,” said Kendra Olafson, an OMB associate director, at a briefing held in the Eisenhower Executive Office Building on Sunday afternoon, between the conclusion of the Mother’s Day proclamation reading and the start of the evening news cycle. “The purpose of the working group is to confirm that, with rigor.”

Ms. Olafson declined to specify what a determination of having moved on would, in operational terms, permit the federal government to do. Pressed by reporters, she said the question was “exactly the question we have asked the group to begin with.”

The working group’s establishment follows the formation last week of a Pentagon commission charged with determining whether the recent war occurred, and a Senate Foreign Relations subcommittee that has been meeting since Tuesday to determine whether the ceasefire is, properly speaking, holding. Administration officials said the three bodies would coordinate as needed but would operate independently.

“We don’t want to prejudge each other’s findings,” Ms. Olafson said. “If the Pentagon determines that no war occurred, that has implications for whether we have moved on from it. But we should not let those implications drive our process.”

The group will rely on a combination of polling data, federal employee survey results, internet search trends and a custom index developed by the Bureau of Economic Analysis tracking restaurant reservations, movie ticket sales, attendance at minor league baseball games and the volume of opinion pieces using the phrase “in the weeks since.” A draft methodology document circulated Friday characterizes the index as “directional rather than definitive.”

Several outside observers said the effort was overdue.

“There is no shared rubric in American public life for determining when a national event has been processed,” said Dr. Niamh Carrington, a political scientist at the University of Maryland who studies what she calls “collective transitional behavior.” “We rely on a vague sense that some amount of time has passed. A more structured approach would be a real contribution, provided the methodology is sound.”

Dr. Carrington said she had been invited to consult with the working group on a pro bono basis and had agreed.

Other analysts raised concerns about the timing. Lewis Ohrenstein, a former Bush-era OMB official now at the Hoover Institution, said the establishment of a working group could itself complicate the very process it was meant to measure.

“You cannot ask a country whether it has moved on without reminding the country of the thing it is meant to have moved on from,” Mr. Ohrenstein said. “I am not sure the administration has fully grappled with that.”

A senior White House official, speaking on the condition of anonymity to discuss internal deliberations, said the administration had considered that risk and had concluded it was manageable. “Most Americans are not paying close attention to the existence of the working group,” the official said. “Which is, in itself, a data point.”

The charter directs the working group to consider a range of indicators. These include the share of cable news airtime devoted to the war in any given week, the rate at which the phrase “post-conflict” appears in trade association press releases, and the willingness of members of Congress to take questions on subjects unrelated to the war during weekly press availabilities.

The group has also been asked to assess what the charter calls “ambient mood,” defined as “the residual tone of conversation in public settings, including restaurants, ride-share vehicles, and the lobbies of federal buildings, exclusive of explicit references to the conflict.”

A Department of Veterans Affairs representative on the group, who was not authorized to speak publicly, said the V.A.’s participation reflected concern that any premature declaration of national resolution could disadvantage service members and families still navigating the consequences of the conflict. “We want to make sure that ‘moving on’ is not used to mean ‘no longer responsible for,’” the representative said.

Ms. Olafson, asked about that distinction at the briefing, said the working group would treat the two concepts separately.

The group will hold its first meeting on Tuesday. Its work product, officials said, would be classified as “deliberative” through the production of the initial report, after which selected findings may be released, subject to a determination by OMB on whether release would be consistent with the findings themselves.

The president, in remarks at a Mother’s Day brunch on Sunday morning attended by military spouses, did not directly reference the working group but said the country was, in his assessment, “doing very well, considering.”

Administration officials said additional working groups were being scoped.