Since the turn of the 20th Century there have been only 5 monster quakes registering 9.0 or higher.

1952 Soviet Kamchatka 9.0

1960 Chile 9.5

1964 Alaska 9.4

2004 Sumatra/Indonesia 9.1

2011 Japan 9.0

They are all related; they are all on, or connected to, the Pacific Ring of Fire.

The time between each quake is not equally spaced so it’s not possible to predict when the next one will hit (using that method).  8 years between Kamchatka &  Chile, 4 years between Chile & Alaska, 40 years between Alaska & Sumatra, 7 years between Sumatra & Japan.