Every summer our neighbours allow their 3 children to play out, very loudly, at 7.30 in the morning at weekends. Sometimes it is earlier and with warm weather and open windows I am fed up of being woken at weekends by screaming and fighting. I have teenagers who work on a very different timescale but I do remember early mornings. However i did not inflict their early morning antics on the rest of the neighbourhood. What is a reasonable time to play out?