If all we knew was that it was in February, it would most likely be less than a month prior to Lincoln's inauguration on March 4."Fellow citizens, if there is to be war, let it come. We can be ready in ten days. In another ten days we will take Washington. Philadelphia will be ours ten days later. In tend days more New York will fall into our hands. Boston we don't want because we don't care for baken beans!" -- Jefferson Davis.
Welcoming speech at local stop during Jefferson Davis's trip from Vicksburg to Montgomery, February 1861.
This was over a month prior to Lincoln taking office.
Moreover we can date it more precisely to sometime between Davis' selection as CS President on Feb 9 and his inauguration on the 18th. So for whatever significance it has, it was about 2-3 weeks prior to Lincoln taking office.