| − | ''Regula Coenobialis of St Columban'', written in AD 540‐615, is the oldest source that describes November 1 as the first day of winter.<ref>“Rule 7: … up to the beginning of winter, that is, the first of November.” ''Regula Coenobialis of St Columban''.<br/>“Lonán, Colmán, Cronán with their bright sunny following the hosts of Hilarius sure multitudinous ennoble stormy All‐Saints’ day [Samain].” ''Felire Oengusso.''</ref> November 1 was Christianized as All Saints Day in the eighth century. | + | November 1 was already linked to Celtic winter before the date became a Christian holiday. It was "the beginning of winter," according to ''Regula Coenobialis of St Columban'', written in AD 540‐615.<ref>“Rule 7: … up to the beginning of winter, that is, the first of November.” ''Regula Coenobialis of St Columban''.<br/>“Lonán, Colmán, Cronán with their bright sunny following the hosts of Hilarius sure multitudinous ennoble stormy All‐Saints’ day [Samain].” ''Martyrology of Óengus'', ninth century)</ref> Pope Gregory III placed All Saint Day on November 1 in 731. |
| | ''Cormac's Glossary'' 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. This glossary was started by the king-bishop of Munster around AD 900. Some entries were added centuries later.<ref name="Cormac">Beltaine is identified with ''biltine'' (May Day). The entry on November notes that it is the winter month following Samhain: "'''Gamuin''', i.e. in the month of Gam, i.e., after Samuin; whence gamnach, i.e. winter‐engorged teats, i.e., milk milked in the month of winter, i.e. in the season of winter." (''[https://archive.org/details/sanaschormaicco00stokgoog/page/n40/mode/2up Sanas Chormaic. Cormac's glossary]'' | | ''Cormac's Glossary'' 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. This glossary was started by the king-bishop of Munster around AD 900. Some entries were added centuries later.<ref name="Cormac">Beltaine is identified with ''biltine'' (May Day). The entry on November notes that it is the winter month following Samhain: "'''Gamuin''', i.e. in the month of Gam, i.e., after Samuin; whence gamnach, i.e. winter‐engorged teats, i.e., milk milked in the month of winter, i.e. in the season of winter." (''[https://archive.org/details/sanaschormaicco00stokgoog/page/n40/mode/2up Sanas Chormaic. Cormac's glossary]'' |