Use "yester" in a sentence

1. Burgomastership Remember yester day when training

2. Because this is a global menace which after devastating a large part of the northern hemisphere is now intruding into the industrial regions of the South This versatile destroyer eats away the forests , acidifies fresh water sources , afflicts human beings , and , causes irreversible damage to monuments and buildings which stand as testimony of time and symbols of our culture and civilisation of the yester years .