Memorials are scheduled for both 18-year-old Jacob Kudla and 17-year-old Jourdan Bobbish.
The service for Bobbish will be held Friday morning at Ward Presbyterian Church in Northville.
Kudla's service will be held 11 a.m. Saturday at Christ Our Savior Lutheran Church in Livonia.
Both memorials are open to the public.
Kudla and his friend, Bobbish, were found shot to death July 27 in an abandoned Detroit lot.
The Local 4 Defenders have offered a timeline of known events in the Westland teens' murders.
Complete coverage: Westland teens found dead in Detroit
Sunday evening, July 22
Kudla and Bobbish drove from their Westland homes to Kudla's uncle's home on the east side of Detroit. Local 4 has been told the teens were hoping to get some pills and marijuana to help Kudla cope with pain from a previous injury. Kudla's uncle, Richard Baxter, said he has no idea what happened to the teens after they left his house.
Monday, July 23
Detroit's west side: Investigators found the car Kudla was driving in an ally. Witnesses said they saw two men stripping the car and using bleach to clean it. The car was taken in as evidence. The men were questioned and later taken into custody.
Family members began an all-out search which carried into Tuesday, July 24. They were searching the area for any clues.
Wednesday, July 25
Kudla's mother spoke out hoping someone would find her son and bring him home.
"There has been no phone activity on either boys' cellphone since Sunday," said Virgie Kudla.
The families continued searching the west Detroit neighborhood where the car was found. They had no luck.
Thursday, July 26
Family, friends and members of the community gathered for a candlelight vigil at Livonia Churchill High School. Kudla's mother remained optimistic.
"We are bringing our boys home," she said.
Friday, July 27
Investigators made a gruesome discovery. Two bodies, both male, were found on the east side of Detroit. Both victims were stripped of clothes and shot in the back of the head.
Saturday, July 28
Saturday brought the news no one wanted to hear: It was confirmed the two bodies found Friday of Kudla and Bobbish. Later that day, the two men who allegedly found Kudla's car and stripped it were formally charged with that crime. Police were investigating whether the two men also were connected to the murders.
Sunday, July 29