Are the events of the novel happening in the present or have they already occured in the past? Provide one piece of evidence from the text that supports your answer. (Chapter 1 only)

Scout is relating these events in retrospect. She is grown up writing about the past.

This text is evident right away in Chapter 1,

"When he was nearly thirteen, my brother Jem got his arm badly broken at the elbow. When it healed...

"When enough years had gone by to enable us to look back on them..."