Many Jewish Canadians celebrate Rosh Hashana (or Rosh Hashanah), which is also known as the Jewish New Year. Rosh Hashana starts on the first day of Tishrei (or Tishri), which is the seventh month in the Jewish calendar, and may last for two days. It is sometimes called the Day of Remembrance or the Day of Blowing the Shofar.

Rosh Hashana (or Rosh Hashanah) marks the beginning of the Jewish New Year and covers two of the 10 High Holy days that conclude with Yom Kippur, the Day of Atonement. Some sources say that the early Jewish calendar had four New Years, corresponding the seasons, with Rosh Hashana being one of the New Years.

Festivals to mark the beginning of a new year in the fall have been held since the earliest days of the Israelites. These took the form of prayers of thanks for the grain harvest. The custom of blowing trumpets on the 10th day of the month of Tishrei is first described in the vision of Ezekiel, a prophet who lived sometime around 600–500 BCE. This custom has continued into modern times.