All Saints' Day is a holy day of obligation in the Catholic Church, which means that worshippers must go to Mass on this day. Attendance at Mass is not necessary if the holy day falls on a Saturday or a Monday, as many people follow this.

All Saints' Day is on Tuesday, November 1, 2022. It’s immediately after Halloween on Monday, October 31, and then followed by All Souls' Day on Wednesday, November 2nd.

There’s no exact date of origin for the day, however, initially, All Saints’ Day was celebrated on May 13. Pope Boniface IV on May 13 609 AD, dedicated the temple in Pantheon as a church to honour Virgin Mary and all saints.

To celebrate the day, people visit the graves of their loved ones and offer flowers. In countries like Spain, Portugal, Belgium, Italy and Mexico, people usually offer flowers on the graves of their loved ones.

On the other hand, in countries like Austria, Poland and Romania; people lit up candles on the graves of their family members.

In the Philippines, graves are also cleaned and repaired. In Latin communities, people visit the graves along with a feast and this includes the foods loved by the deceased.

One of the origin stories claims that Pope Boniface IV established All Saints' Day as a feast day on May 13 in 609 AD.

He dedicated the Pantheon in Rome to the Virgin Mary and all the martyrs on that day. Pope Gregory III declared the official date of November 1 during his tenure (731–741 AD), when he dedicated a chapel in St. Peter's Basilica to "all saints."