Tier 1 Entrepreneur Stay in UK Requirement for extension

Hello

I remember somewhere I read about number of days to stay in UK for extension of Tier 1 Entrepreneur visa.
it was something like 90 days allowed absence in UK within 3 years.

anyone know what was that requirement ?

Thanks
Reza

Best way to find out is policy guidance I reckon it's 180 days

Thanks Solomon

finally found it as per your key word of 180 days in T1E Guide


The applicant has spent the specified continuous period lawfully in
the UK, with absences from the UK of no more than 180 days in any
12 calendar months during that period.

so does it mean you can be out of country for 180 days per year