The phrase "a complex time in" is correct and usable in written English.
It can be used to describe a period or situation that is intricate or difficult within a specific context, such as personal life, history, or a project.
Example: "We are living in a complex time in our society, where technology and ethics often clash."
Alternatives: "a challenging period in" or "a difficult phase in".
Earlier, at the formal ceremony at the Knesset, Biden described Sharon as "a complex man … [who] lived in a complex time in a complex neighbourhood", alluding perhaps to his role in the massacre of hundreds of Palestinians in the Sabra and Shatila refugee camps in Beirut in 1982.
It was a complex time in my life".
The topic arises at a complex time in which a long series of rulings by Italian judges have defined, with ever-increasing clarity, just how much or how little information should be offered to patients prior to obtaining their consent to any medical-surgical treatment.
Understandably, women with families have a more complex time in taking this step (see the above for one example), however, more women are needed to make the changes that need to be made.
He does not have the temperament to lead in a complex time, his overbearing style would ride roughshod over civil liberties, and his support for Republican economic policies generally is troubling.
This results in a complex, time costly dynamic programming method that basically explores all the possible translations.
The other tactic is to come at the subject as if she knows nothing about it, instead throwing it open to various experts and historians who are more qualified to dissect and unravel an unimaginably complex time in history.
In her work, she wrestles with uncertainties: How do we think positively in such a complex time?
The neuro-endocrine-immune system function is characterized by a complex time structure composed of multiple rhythms in different frequency ranges.
Differentiation to the beating EB stage is a very exciting and complex time in the life of the cell population.
A group of such falling drops creates a complex time-varying signal in videos.
