Need clarification about eligibility of citizenship

[ILR1980]

How much time you can spend outside uk after getting ILR (long residnce) in order to qualify for citizenship ? I know that you must hold ILR at least one year in order to qualify for citizenship but how much time you can spend outside uk in this one year?

It say you cannot spend more than 90 days but can you spend 85 day outside uk and then can come back and can go again for two months after six month? or you cannot spend 90 days in total outside uk in last 12 months of ILR

help will apprceiated. thanks

[vivdubes]

You cant spend more than 90 days in your final year after getting ILR. So no question of 6 months.. if you have to go out and if you intend to take British citizenship after holding ILR for one year then you should be out only for 90 days.