Citizenship Am I eligible Now?????

[Pepe n Pilar]

spouses of british citizens do not have to wait for a year after they get ILR. They can apply on the day they are granted ILR so long as they have been in the UK long enough ie 3 years, and not too many days outside of the UK.

So the basis of the 3 years qualifying period is the stamp on the passport when they arrived in the UK right? And for the fiancee visa is it based on the date of marriage?