Yule / Winter Solstice is on or near December 21st here in the northern hemisphere, nights get longer and days get shorter.
Imbolc means, literally, 'in the belly' (of the Mother) and in the womb of Mother Earth new life is truly stirring, nuts and seeds symbolize new beginnings.This is when the snowdrops and crocuses push their way out of the still-cold earth.
Beltaine / Beltane / May Day - May 1
Midsummer is the longest day of the year.
Even though Lughnasadh occurs at the warmest time of the year, it marks the time at which days become noticeably shorter and so is considered the starting point of the autumn quarter of the year.
Mabon is the time of the second harvest, when fruits are ready for collection. The land is showing clear signs of the journey towards winter. This will be a strange experience for me as my birth day is usually in Spring now it will be in Autumn.
This is the Last Harvest and New Year's Eve to the ancient Celts. Samhain is also a day for honouring our ancestors, laying an extra place at the dinner table for those who have passed over to the Summerlands. In Mexico they celebrate the Day of the Dead.