We haven't had a Magickal Monday yet, so hurrah! First Magical Monday is about Litha!
Litha is better known as the Summer Solstice. Some call it Midsummer, which is (in my opinion) a wholly ridiculous name since the Solstice marks the start of summer, not its middle. Anyway.
Yule on the Wheel of the Year. It's the celebration of the union of the God and Goddess (and why June is *the* wedding month) and, in some Celtic traditions, it is the other time of the year when the Oak and Holly Kings battle for the throne. At Litha, the Oak King falls and it is the Holly King who reigns.
We celebrate fertility, life, fulfillment at Litha. It is a time of joy and celebration as we bask in the longest day of sunlight, the light of the Lord. It is also the last day of this before the gradual darkening as we move to fall and then winter.
Litha is also a time to honor the faerie folk. If it is your preference to work with these fine folk, Litha is the best time to honor them. You could set up an altar dedicated especially for them, with flowers and colorful, shiny things. Just remember that faerie folk are to be respected; they have a power all their own and shouldn't be taken lightly.