The date of his death will be from August 22 to August 29.
The coroner had earlier declared his death a homicide.
Petito, 22, went missing weeks after she went on a road trip with her boyfriend, 23-year-old Brian Laundry.
Some other dates that have been confirmed for the couple’s trip:
July 2Petito and Laundry set off from New York on a four-month road trip through national parks.
August 12There are potatoes and laundry. Police stopped In Arches National Park, a man saw the couple involved in a physical altercation outside a shop in nearby Moab, Utah. The couple admits they had an argument, and police help Laundry find accommodation so the two can spend the evening separately.
August 17: Laundry flies to Florida, while Petito lives in Salt Lake City. He reportedly said he wanted to get some supplies and shut down the storage unit because the couple was considering extending their trip.
August 23: Laundry flew back to Utah
August 24: Laundry and Petito check out a hotel in Salt Lake City.
August 25Petito’s last voice contact with his family in New York. She says she is in Grand Titan National Park. She also tells a friend on SnapChat that she is going to Yellowstone.
August 25: Petito posted his last photo on his Instagram account.
August 27: Petito last confirmed with laundry at a Jackson, Wyoming restaurant. A woman who says she saw him there reported that Laundry apparently got into an altercation with a restaurant employee, that he was “angry” and that Petito was “upset” when they left.
August 27Around 6 or 6:30 p.m., a pair of dashcams driving in the Spread Creek camping area of Breeder-Teton National Forest record a video of Petito’s van parked on the road. The Florida couple said they took notice because it contained Florida plates. He said he did not see anyone with the van.
August 27Petito’s mother received a text message from the young woman’s phone, but said she found it strange and couldn’t believe it was her daughter’s.
August 30Petito’s mother received another text message from the phone, simply stating, “There is no service at Usmite.”
September 1: Laundry arrives at her parents’ home in North Port, Florida, and goes home in a van. Petito is not with it. Northport is about 2,500 miles from Jackson.
September 11Petito’s parents report his disappearance.
September 14: Laundry’s parents say they last saw him the day he left home with camping gear.
September 17: Laundry’s parents call police and report him missing.
September 19Petito’s body was found in the Spread Creek camping area of the Brager-Teton National Forest in Wyoming.