Queen breeding calendar disk. The inner disk represents the age from egg being laid. The outer disk is the calendar date. Grafts are taken on day 4, and splits are considered day 6 (The bees will choose a larvae between day 4 and 6, count as 6 to be safe). Line up the word Graft with the calendar date and the dates for when cells should be capped, placed in incubator, in nuc and when queen could be laying are shown on the outer disk. Based on a 31 day month. For shorter months, advance the outer disk 1 day.