Tidal effects do not cause earthquakes, there's someone who doesn't read the New Scientist. Or posts properly. How many moons in our solar system are hotter than they should be, because of tidal friction? The effect is on rock, as well as water, it is just relative.

The moon doesn't cause earthquakes, per se. Any more than vibration causes friction. And the analogy holds well because vibration reduces friction thus, and is well used in industry, and lubrication does too.

How many fault lines are there with a stream or river flowing along them? They occur in NZ and it is well recognised there is a link. Indeed (see New Scientist again) one proposal is to inject water into faults in California to generate many small quakes, instead of armageddon. And it wasn't Trump who thought up that one!

Now the moon causes tidal friction, and is a near sinusoidal vibration therefore on the global spacial/time scale fully analogous. The problem is one of prediction - not understanding causality.

Then there are moonquakes. See New Scientist again for tidal friction/cause on that one too.

Quakes are random events on the timescale of your life, and many better minds than mine have little pre-cognition when it comes to date, but they know probability a bit better.

Tidal effects do cause quakes, it is just a matter of which is the most important influence - i.e. the one inside this planet, c.f. extra-terrestrial.