Which, this year is today instead of yesterday.  The reason it’s at this time of year is closely linked to the reason that Hallowe’en was ‘nicked’ from the pagans.  Anyway, this is the day we celebrate all the saints in heaven, even the ones nobody knows about, and consider the nature of sainthood, and our desire to be saints too. 

Prayer: litany of the saints
Music: For All the Saints: Oh When the Saints go Marching in, etc.