Yes, they both have dates. I can find no discrepancy between the two, so I am not clear on what you a saying.
Just because there are big gaps in the Portland release does not negate the Anchorage office's timeline.If the Anchorage press release was inaccurate, it would not still be posted on their website.
GGE's timeline on here has merged all the info from all the press releases so far made public. It does not place him somewhere else during March 13 2010 specifically, so I think it would'nt be ruled out (just from the timeline)
December 17, 2009: Alaska Airlines flight (Anchorage, Alaska to Orlando, Florida). Went on Celebrity Cruise, visiting San Juan, St. Croix, St. Kitts, Panama, and St Johns.
December 29, 2009: Alaska Airlines flight (Orlando, Florida to Anchorage, Alaska).
12/17 - 12/29, 2009: UPDATED FBI Timeline - AK to Orlando, FL
Flew from Anchorage, AK to Orlando, FL on 12/17/2009.
No known rental vehicle.
Left Orlando on 12/29/2009.
1/11 - 2/25, 2010: FBI Timeline - Western US
FBI Timeline puts Keyes in the Western US between 1/11 - 2 /25 2010
3/1 - 10, 2010: FBI Timeline - Western US
FBI Timeline puts Keyes in the Western US between 3/1 - 3/10 2010
4/24 - 4/30, 2010: FBI Timeline - Western US
FBI Timeline puts Keyes in the Western US between 4/24 - 4/30 2010
5/19 - 7/18, 2010: FBI Timeline - Midwest & Western US
6/9/2010: Alaska
Keyes obtained an Alaska fishing license June 9, 2010.
July 7, 2010: Alaska Airlines flight (Anchorage, Alaska to Seattle, Washington).
July 7 - 9, 2010: Vehicle rental (Thrifty); 2010 Chevy Malibu, Washington license plate 6JCZ721; drove 393 miles - Seattle, Washington.