The phrase "almost two weeks before" is correct and usable in written English.
It can be used to indicate a time frame that is just short of two weeks prior to a specific event or date.
Example: "The meeting was scheduled almost two weeks before the deadline for submissions."
Alternatives: "nearly two weeks prior" or "just under two weeks before".
They had to wait almost two weeks before the abortion.
Despite this, it would take almost two weeks before Congress agreed – at the second attempt.
Dhirubhai Ambani, the 69-year-old founder of Reliance, India's biggest business group, lay there in a coma for almost two weeks before his death on July 6th.
The phone on which Pistorius called Edkins was one of two handsets, and was apparently removed from the crime scene for almost two weeks before it was handed over to the authorities.
According to Frost, on 6 August 2013 he became aware of a dispensing discrepancy involving morphine sulphate tablets that occurred almost two weeks before he started working at the camp's medical centre.
Stir in an election year — when legislators routinely avoid anything that could wake the gallery — and if you ask what is happening in Albany almost two weeks before the end of this year's session, the answer is: "It's quiet".
It was almost four weeks before we were able to return to our facility.
Judge Sullivan displayed his annoyance with the prosecutors' conduct for the first time almost four weeks before Mr. Stevens was convicted.
The midfielder had been missing for almost six weeks before the games against Georgia and Moldova because of groin surgery and Koeman described the 25-year-old as "massively overloaded" upon his return from Ireland duty.
Mesa Verde National Park in Colorado, a trove of ancient cliff dwellings and ancient Anasazi artifacts, was closed twice for a total of almost three weeks before reopening Aug. 14.
