Is this enough winter light for my cattleyas to bloom?

[rbarata]

I have hybrids and species, also I have a milleri, a briegeri, a Laelia anceps and they all bloom. Note these are all species that need a lot of light to bloom.
Some Catts grow and bloom in winter and all of mine do what they are supposed to do.
Look at the leaves and their color, light green is what you want to see.
You can also use a photometer app and measure the light. But before, ask a favour to a professional photographer and compare the values in your phone with those in his photometer as there's always some discrepancies.