The phrase "about the situation when" is correct and usable in written English.
It can be used to introduce a discussion or explanation regarding a specific event or circumstance.
Example: "We need to talk about the situation when the project deadline was missed and how we can prevent it in the future."
Alternatives: "regarding the time when" or "concerning the instance when".
Ms. Chapelle and Mr. Ackermann both are frank about the situation when the designer was asked to take over at Martin Margiela after the founder left.
Walter Winchell couldn't have known everything about the situation when he accused the N. Y. theatres of being in cahoots with their hatcheck concessionaires.
Receiver Jonathan Carter knew little about the situation when he was selected by the Giants in the fifth round of the 2001 draft.
BBC Scotland understands the players will be told about the situation when they arrive for training on Monday morning.
About half of his clients don't even plan to tell their kids, he says, letting them find out about the situation when they inherit.
"There has also been interest from other clubs regarding his possible availability and the club is due to speak to Joe, as originally planned, about the situation when he returns from GB duty.
All Irv wanted to talk about was the situation — when was Israel going to make us proud by making itself safe?
Much less has been said about planning for the situation when PLHIV have been stabilised on treatment so that their immunity is largely restored and they can resume familial and social roles, although a number of important medical and social issues emerge at this stage.
Post-qualifying, at the individual media sessions for the drivers, Hamilton attempted to take the sting out of the situation when asked about Rosberg's move.
When you do seek help, your doctor or therapist will ask about your symptoms and the situations when they arise and might also recommend additional medical testing to rule out other health concerns.
The N.F.L. became concerned about the Broncos' situation when it learned that Pat Bowlen, the Broncos' owner, had deferred almost $30 million in salary payments to Elway and Davis.
