Changes

===Scottish origins===

===Scottish origins===

====The Celtic calendar====

====The Celtic calendar====

''Sanas Cormaic'', an Irish glossary written around 900, gives ''Imbol'' (February 1) as the first day of spring, ''Beltaine'' (May 1) the first day of summer, ''Lugnasad'' (August 1) the first day of fall, and ''Samhain'' (November 1) the first day of winter.<ref name="Olmsted">Olmsted, Garrett (2009). ''The Coligny Calendar: the Implications for Gaulish and Irish Festival Dates''.</ref> In modern Gaelic, ''Samhain'' refers primarily to the month of November.<ref>Mark, Colin, ''The Gaelic–English Dictionary'' (2003)<br/>All Saints' Day is called ''Fèill nan Naomh Uile'' in Scotland and ''Lá na Naomh Uile'' in Ireland.</ref> The Irish adopted the Julian calendar around AD 450. These seasonal dates may have transferred from the Celtic calendar at this time.

''Sanas Cormaic'', an Irish glossary written around 900, gives ''Imbol'' (February 1) as the first day of spring, ''Beltaine'' (May 1) the first day of summer, ''Lugnasad'' (August 1) the first day of fall, and ''Samhain'' (November 1) the first day of winter.<ref name="Olmsted">Olmsted, Garrett (2009). ''The Coligny Calendar: the Implications for Gaulish and Irish Festival Dates''.</ref> In modern Gaelic, ''Samhain'' refers primarily to the month of November.<ref>Mark, Colin, ''The Gaelic–English Dictionary'' (2003)<br/>All Saints' Day is called ''Fèill nan Naomh Uile'' in Scotland and ''Lá na Naomh Uile'' in Ireland.</ref> The Irish adopted the Julian calendar around AD 450. The seasonal dates may have transferred from the Celtic calendar at this time.

[[File:De Ricci Coligny 1926 detail month14.jpeg|left|100px|Part of the Coligny calendar. This Celtic calendar was discovered in Coligny France in 1897]]A Celtic lunisolar calendar has been reconstructed from fragments of two first century BC calendars, one found in the French town of Coligny and the other in Villards d'Heria. The first month on this calendar is called ''Samonios''. This month is cognate with Samhain. The Celts celebrated a three-day festival that began on the 17th of ''Samonios'', according to the calendar. This date may correspond to the winter solstice, which is on December 21.<ref name="Olmsted"/>

[[File:De Ricci Coligny 1926 detail month14.jpeg|left|100px|Part of the Coligny calendar. This Celtic calendar was discovered in Coligny France in 1897]]A Celtic lunisolar calendar has been reconstructed from fragments of two first century BC calendars, one found in the French town of Coligny and the other in Villards d'Heria. The first month on this calendar is called ''Samonios''. This month is cognate with Samhain. The Celts celebrated a three-day festival that began on the 17th of ''Samonios'', according to the calendar. This date may correspond to the winter solstice, which is on December 21.<ref name="Olmsted"/>