The phrase "aware that when you" is correct and usable in written English.
It can be used to indicate that someone has knowledge or understanding of a specific situation or action that occurs at a certain time.
Example: "I want you to be aware that when you submit your application, it will be reviewed by a panel of experts."
Alternatives: "conscious that when you" or "mindful that when you".
You are not aware that when you paint only cruelly, underlining only faults or weaknesses, you are the loser.
"We're aware that when you hang paintings in that way you sometimes can't get near to the art," he concedes.
You are probably aware that when you put a satellite collar on that Siberian tiger, the tiger had actually been borrowed from the Khabarovsk zoo.
Be aware that when you refuse the extra cover the rental firm will "pre-authorise" a sum to cover the excess on your credit card.
"Because, I'm well aware that when you cross over in this direction, you really can't go back especially at my point in life so I understand this is a permanent step for me that I can't reverse".
One of the worst avalanches occurred just up the valley from Les Grands Montets, killing 12. "Most people are aware that when you go on a skiing holiday, you have to have snow," he said, suggesting that skiers were willing to accept a level of risk.
"There are plenty of novelists who think that money is important and make you aware of that when you are reading, but she makes her characters aware of it, which is a rather more brilliant thing.
"You're not always aware of that when you're debating bills in here; you think of things more in the abstract".
"You have to be well aware of that when you step through the door and sit behind the desk, it is all about winning and making sure your team lives up to the reality of where it should be with what is spent and the quality of players you have".
It's not the grippiest track in the world and you've got to be aware of that when you're racing.
What people think they want, and how they react to a working product, are two entirely different things and you have to be aware of that when you're building a product, to not build too much before putting it in people's hands.
