18 days to go.
Friday, Dec. 21, 2018 at 5:23 PM will be winter solstice. As the days get longer, the queens will begin laying for spring bees. It will start in the south and move northward and increase as the days get longer and the flows begin.
Just remember, most hives that starve will do so in the last weeks before bloom. The supplies will be running low and the brood, IE: mouths to feed, will be increasing. Heft your hives often and feed as needed.