A few days later this year. April 21st 2023. Previous years have been: 

2022 on the 17th [ish]
2021 on the 17th
2020 on the 9th
2019 on the 8th
2018 on the 19th
2017 on the 11th
2016 not here
2015 missed it
2014 on the 11th
Spring in the Groove 2022 #Harborne #springishere @MoorpoolHT