Plygain is an ancient Welsh church tradition in that greets Christmas Day in song. Historically, it took place between 3 and 6 o'clock in the morning, whereafter the day's celebrations (and feasting) could begin. It had died out in many parts of Wales but is enjoying something of a resurgence, as this list of services in St Davids Diocese shows - and it's not confined to Christmas morning at 3am! 2 December 2018 St. Afan’s Church, Llanafan 5pm 3 December…