Big Welsh Rhymetime with Aura Libraries. Big Welsh Rhymetime It's time to celebrate the #BigWelshRhymetime again! Whilst celebrations may be a little different this year, we here at Aura Libraries are still very excited to be able to bring you extra special rhymetime sessions online, and continue to spread a shared love of reading for all ages. The Big Welsh Rhyme Time, organised by Book Trust Cymru, is aimed at children aged 0-7, takes place this year between Monday, February 8 and Friday, February 12. The purpose of the Big Welsh Rhyme Time is to encourage children to share rhymes and songs in Welsh and English, helping them to develop speaking, listening and language skills before, or whilst, they learn to read.