Wednesday 1st November is the Solemnity of All Saints, a holy day of obligation.
On these holy days, the faithful are expected to attend Mass, as on Sundays.
All Saints' Day is a solemn holy day of the Catholic Church. It is celebrated annually on 1st November. The day is dedicated to the saints of the Church, that is, all those who have attained heaven.
It should not be confused with All Souls' Day, which is observed on 2nd November, and is dedicated to those who have died and not yet reached heaven.
Refer to your parish's bulletins, websites and social media for correct times of Vigil Masses (Tuesday 31st October) and Masses on the solemnity.