In the US, there's a lot of administrative pressure to keep the time-to-degree somewhere in the neighborhood of five or six years, but there's not usually a fix

In the US, there's a lot of administrative pressure to keep the time-to-degree somewhere in the neighborhood of five or six years, but there's not usually a fixed cut-off date for everyone there. Instead, they just get increasingly insistent about you making "forward progress" and increasingly reluctant to keep your funding going.