Lammas is all about abundance and giving thanks for the harvest. This Celtic sabbat celebrates the Goddess as the Grain Mother and the Sun God who sacrifices his life so that the harvest can be cut and gathered.
Summer Solstice takes place on June 21st and it marks the first day of summer. It is also known as Midsummer as this is when the sun reaches its peak, resulting in the warmest and longest day of sunlight of the year.
Ostara or Spring Equinox takes place on 20th March and assigns the beginning of Spring time.