The phrase "a particular time when" is correct and usable in written English.
It can be used to specify a specific moment or occasion in time related to an event or situation.
Example: "There was a particular time when I realized the importance of hard work and dedication."
Alternatives: "a specific moment when" or "a certain time when".
"It was a particular time when artists had a wide-open palette," Ms. Rupp, 63, said.
The spirit of the carnival came out of her political knowledge of what to touch at a particular time when we were scared, in disarray".
To feel that people would rather freeze you in a particular time, when you had meaning for them, rather than let you move on to a place where you have meaning for yourself.
"The idea is that airlines should pay more to land at a particular time when capacity is limited and expansion is not possible," says Bijan Vasigh, managing director of the Florida-based Aviation Consulting Group.
"I think all of these resignations came at a particular time when it looked like the opposition may have had a very good chance," said Diederick J. Vandewalle, a political scientist at Dartmouth College who has traveled extensively in Libya.
Therefore, even if Guzek can introduce doubt about whether he was at a particular location at a particular time, when his codefendants claimed he was there, regardless of whether that period of time was when the crime was being planned, Guzek can then cast doubt on the legitimacy of his codefendants' testimony as to his location at the actual time the crimes were being planned.
Suddenly you have a moment: a very particular time when that stump stood, and that was ground level, and its surrounding sediments tell you what the ground looked like.
Updated at 5.47pm BST 5.13pm BST Why did Assad apparently carry out such a heinous attack at this particular time, when the US and its allies had shown indifference to smaller attacks and when UN chemical weapons inspectors had just arrived in-country?
But at this particular time when you don't have friends try to finish a painting, a novel or something else that you have been working on.
"At that particular time, when they left the symposium in the past, they were a couple weeks away from training camp and they were going through information overload.
