People in Scotland have begun voting on whether it should stay in the UK or become an independent nation.
They are expected to say "Yes" or "No" to the referendum question: "Should Scotland be an independent country?"
Surprisingly, over 95% of the electorate have registered for the vote, a historically high turnout is expected.
With over 2,605 polling centre across the country, votes will be cast until 22:00 on Thursday (today). Result will be announced on Friday morning.
At the close of the pools, ballot papers will be counted in the 32 local authority areas.
These will include votes cast from the 789,024 postal vote applications, which was the largest volume of registration for postal votes ever in Scotland.
After votes have been tallied, the counting officer in each area will communicate the result to the chief counting officer Mary Pitcaithly in Edinburgh.
With her approval, the result will be announced.
Once the results from all 32 local authority areas are known, Ms Pitcaithly will declare the result of the referendum at the Royal Highland Centre outside Edinburgh.
Ms Pitcaithly has said she will announce the result at "breakfast time" on Friday.
The result is most likely to be between 06:30 and 07:30, according to Elections Scotland.
That is because the final Scottish declarations in the 2010 UK parliamentary elections and the 2011 Scottish parliamentary elections were made at those times respectively.
Elections Scotland explained that recounts will only be permitted at a local level on the ground of concerns about process, and not on closeness of a result.