Imbolgc holds a very special place in our hearts. It was the first big ritual that Pagan House performed. We united, even for a short while, the entire Pagan Community in Omaha. The is much debate about the spelling of Imbolgc. The Pagan House Board adopted the spelling you see here. 
On the night of February 1st, 2nd or 3rd (preferably the actual Cross Quarter day, but something close works too), Witches celebrate the Imbolgc Sabbat. This night, halfway between the Winter Solstice and the Vernal (Spring) Equinox is the time when Nature begins to stir unseen and awaken from Winter's death-like sleep.
Solitary Practice
A symbol of the season, such as a representation of a snowflake, a white flower, or perhaps some snow in a crystal container can be placed on the altar. Three white candles anointed with Dragon's Blood (Protection), Frankincense (Devotion), Nag Champa (Enlightenment), Jasmine (Transition), India Temple (Worship) and/or Rosemary (Prosperity) oil, unlit, should also be there. Snow or ice sickles can be melted for the water during the circle casting.
Arrange the altar in a standard (Diagram #1) or Imbolgc (Diagram #4) format, light the candles and incense, cast the circle, and invoke the God/dess.
Say such words as the following:
"Flame of candles, burning so bright
Instill in me your passionate light.
Father of the Sky, fire so deep
I welcome Thee as the earth stirs
Below it's mantle of sleep
I celebrate Mother Earth
I celebrate Sky Father"