Philistine Oppression Begins (jul 2, 1125 BC – jul 1, 1079 BC)
Description:
"Philistine Bichrome pottery was at Megiddo with a terminus post quem (earliest possible date) of 1124 bC, or in the period (c. 1128-1079 BCE). These dates are based on radiocarbon dating with a confidence of 95.4%."
https://www.journals.uchicago.edu/doi/abs/10.1086/719048
Timeline matches up to Philistine oppression of ~40 years (poss. 46 years according to estimate, but could be 40)
Added to timeline:
Date:
jul 2, 1125 BC
jul 1, 1079 BC
~ 46 years