National Moth Night takes place on 18th-19th September. Running since 1999, it’s open to everyone, expert or beginner, to record moths in the garden or elsewhere, and has turned up some unexpected results. Last year the White Prominent moth appeared in Ireland, seventy years after its last sighting in the British Isles.
If you're wondering how you'd get close enough to a moth to effect an introduction, then the National Moth Night website has instructions for bringing them to you, including this rather fascinating idea of wine ropes.
Moth Night was started by Atropos, the journal for butterfly, moth and dragonfly enthusiasts. They also carry instructions (see their Garden Moths page) on moth traps and give a list of flowers to bring them to your garden. The best are blooms which smell strongly at night, such a night-scented stock, lonicera and red campion.
Must plant some; perhaps that will keep the little blighters from coming in the window.