Not sure how the bells work in US churches, but here they actually serve a purpose, they ring the bells for each hour until 8PM. Around 12 (noon) they have this

Not sure how the bells work in US churches, but here they actually serve a purpose, they ring the bells for each hour until 8PM. Around 12 (noon) they have this little jingle that tells you it's 12 in case you can't keep track of "rings". That way you can either count the "rings" for every hour or just count how many it was since you heard the jingle. I actually do the latter after 12 for "faux" Pomodoro.