The phrase "active at that time" is correct and usable in written English.
It can be used to describe someone or something that was engaged or functioning during a specific period in the past.
Example: "The system was fully active at that time, allowing for seamless operations."
Alternatives: "operational during that period" or "engaged at that moment".
Former Gov. of Kashmir Rao? Former heads of RAW or IB who would have been active at that time?
The study is based on in-depth semi-structured interviews with the most influential architects, active at that time.
Winter cereals would be excluded, because bees are not active at that time, and the suspension would be reviewed after two years.
And, of course, the fact that the convictions of the politicians active at that time could be relied upon to play a decisive role in diplomatic relations.
With a series of court cases stretching back to 2010, the scandal has implicated more than half the Scottish mackerel and herring fleet active at that time.
The generation of Kazakh writers active at that time, including Omar Qarashuwlï and Ahmed Bay Tursunov (Aqmet Baytūrsyn-ulï), were chiefly engaged in pedagogic and political activities.
For each encounter, we extracted the overview notes associated with a patient's problems that remained active at the time of discharge, suggesting that the patient should still take the medications for these problems.
And while the tuition refund policy notes that there is no coverage for an illness that was "active" at the time of enrollment, this generally won't apply to students who are taking drugs for anxiety or depression.
Such similarity between cortical activation at encoding and retrieval is predicted by the transfer-appropriate processing framework, which proposes that successful retrieval involves the reinstatement of neurocognitive processes that were active at the time of encoding (Morris et al. 1977; Rugg et al. 2008).
A restart function can itself invoke any other restart that was active at the time of establishment of the restart of which the function is part.
Previous geobiology studies of these natural deposits have only partially deciphered the relative influence of the physical, chemical and biological factors that are active at the time of layered deposition.
