While the tidal flow period is generally synchronized to the Moon's orbit around Earth, its phase can vary.

These phases often overlap with each other and vary in length depending on the game design.

Scalp: The time these phases last varies from person to person.

In other parts of the world the phase out date varies from country to country.

However, for some sets of neighboring paths the phase will not vary much between paths.

The phase of armature current varies with field excitation.

The freshwater phases of Atlantic salmon vary between one and eight years, variably according to river location.

The later 4 phases vary among the commercial products available.

Actual amplitude and phase leads may vary depending on aircraft behavior.

With some applications, how the phase varies with frequency can be a significant consideration.