Wht is the correct ( in or at every time

[Nader75]

Wht is the correct :
in every time or at every time

[Hayseed]

After racking my brain, I cannot think of a situation where "in" or "at" could be used with "every time".
"Every time I..."
"It happens every time"
Perhaps the Brits have a way of using "every time" differently.