Very good work on the timeline!
June 1960 -- Ann moved to Hawaii with Parents (exact date unknown)
Sept 1960 -- Ann started classes at U of Hawaii (exact date: Sept. 26, 1960)
Oct 1960 -- Got pregnant by Obama SR
Feb 1961 -- Married Obama SR (Feb. 2, 1961) ANN'S EXACT AGE: 18 years, 2 months, 5 days
Aug 1961 -- Gave birth to Obama JR on Aug. 4, 1961 (reportedly in Hawaii and on that date) ANN'S EXACT AGE: 18 years, 8 months, 7 days
Aug 1961 -- Sighting by Susan Blake in late-August on Mercer Island, Seattle (Obama Jr reportedly 3 weeks old) -- SHE'S TRAVELING FROM HAWAII TO SEATTLE, in 1961, WITH A 3-WK-OLD, only to ship the baby BACK to start classes in Seattle? Highly doubtful ...
Fall 1961 -- Attended classes in Seattle at University of Washington (see transcripts below), but not with University of Hawaii in Spring of 1961 -- possible BREAK in Hawaiian Residency status, depending on when she left Hawaii
Fall 1961 -- a Listing for Stanley Ann Obama appears in the 1961 Polk directory at the Seattle Public Library: "Obama Anna Mrs studt h516 13th Ave. E. apt. 2"
1961-1962 -- Anna Obama phone listing, as listed in Seattle Reverse Directory, 1961-1962: "Obama Anna Mrs EA3-3346" at "516 Villa Ria Apartments"
Mar 1962 -- Mary Toutonghi babysat Obama Jr at Ann Dunham (aka Anna Obama) apartment for two months (through May 1962)
Sum 1962 -- Sighting by John W. Hunt in June-Sept 1962 "I had moved to Utah for a while after high school, and I came back to Seattle in the summer of 1962. I remember visiting the World's Fair, and then stopping by Stanley Ann's apartment on Capitol Hill. It was a small apartment, upstairs. It was after June, and could have been as late as September, 1962. I visited her for half a day or so. It was after the end of the spring quarter classes, and she wasn't in classes, and didn't have a job. I recall her being melancholy at the time. I had a sense that something wasn't right in her."
Fall 1962 -- Ann Dunman is no longer registered for classes at University of Washington
Fall 1962 -- Obama SR begins school at Harvard, in Boston, Mass.
Sept-Dec 1962 -- Ann moves back to Hawaii, with baby Obama, to live with parents
Spring 1963 -- Ann Dunham resumes school back at University of Hawaii at Manoa
Jan 1964 -- Ann Dunham files for divorce in Hawaii Court
Mar 1964 -- Divorce is granted (Obama SR does not respond to divorce notice in Boston)