All Saints' Day is a solemn holy day of the Catholic Church celebrated annually on November 1. The day is dedicated to the saints of the Church, that is, all those who have attained heaven.

Although millions of people may already be saints, All Saints' Day observances tend to focus on known saints - that is those recognized in the canon of the saints by the Catholic Church.

Generally, All Saints' Day is a Catholic Holy Day of Obligation, meaning all Catholics are required to attend Mass on that day, unless they have an excellent excuse, such as serious illness.

All Saints' Day was formally started by Pope Boniface IV, who consecrated the Pantheon at Rome to the Virgin Mary and all the Martyrs on May 13 in 609 AD. The Pope also established All Souls' Day, which follows All Saints’ Day.

The holy day was eventually established on November 1 by Pope Gregory III in the mid-eighth century as a day dedicated to the saints and their relics. The May 13 celebration was subsequently abandoned.

After the establishment of the Frankish Empire, and following the reign of Charlemagne, the holy day, which was already celebrated on November 1, became a holy day of obligation by decree of Pope Gregory IV and Louis the Pious, who was king over a portion of Charlemagne's former empire.

The Eastern Orthodox Church and associated Eastern Catholic churches observe All Saints Day on the first Sunday following Pentecost.

All Saints Day comes from a conviction that there is a spiritual connection between those in Heaven and on Earth. In Catholic tradition, the day honours all those who have passed on to the Kingdom of Heaven. It is a national holiday in numerous historically Catholic countries.

In Methodist tradition, All Saints Day relates to giving God earnest gratitude for the lives and deaths of his saints, remembering those who were well-known and not.

Other Saints of the Day
1. Saint Amabilis
2. Saint Cadfan
3. Saint Ceitho
4. Saint Dingad
5. Saint Licinius