Matter is a natural fit. As the ground on which we stand, Matter has no planet that rules it. Seasons Depending on the day of the week and astrological month of the year, Hermetic Mages may be stronger or weaker than mages of other Traditions. In game terms, they will gain bonuses or penalties to their Difficulty numbers. Of course, a Mage could spend Quintessence to lower, for example, an impossibly high 11 to a barely possible 10 or lower.
All modifiers are cumulative in conjunctional magick.
Bonuses are given on the chart below. You first need to know the day and date. Then, go to the Months Table. Find out the Enthronement type for that day on that month. It can be Grand, Neutral, or Opposed.