SigrblotBlessings!
First day of summer in the old Icelandic Calandar. Day is sacred to Odin. It's also known as Sumarsdag or Sigrblot Summer's Day. Also celebrated possibly on the April Full Moon. The purpose was to sacrifice to Odin for victory on the sea.
This would be a good time to look at your life choices and new projects.
A 'blot' is a type of ritual from Asatru. Some form liquid, normally mead or ale is offered to the Gods and Goddesses. The intent of these types of rituals is thanking the Gods for gifts and offering to them gifts in return.
Sources:
http://odin.org/faq.html
http://www.heathfrye.com/AsatruCelebrations.html
http://www.destinyslobster.com/asatru/calendar.html
http://pagancalandar.co.uk
Petra