Hiya John,

Your wifes 30 months first period of FLR starts the day she actually entered the UK.

So say for example your wife arrived in the UK on 10th Feb 2014 then she would have to apply for the second stage of FLR no later than 10th August 2016 ie: 30 months from date of arrival.

She can apply 28 days before that date so that would be no earlier than 13th July 2016 but make sure it is applied for and received by UKVI before the expiry of her 30 month stay ie: in UKVI's hands no later than 10th August 2016.

Like I say just an example but you can work out from that what I mean...