A fully executed contract date begins once both parties signed it. In your case, since you signed them first, the date begins when the seller/affixes his signature. However, the delivery of the ratified contract should also be considered. Consult your realtor and a lawyer.
A group of spiders is called a cluster or clutter. Spiders belong to the group of animals called arachnids.
Funnel-web spiders are spiders that build funnel-shaped webs, which they use as burrows or to trap prey. Three distinct spider families are known popularly as funnel-web spiders, but they are all quite different. Some species are among the most deadly spiders in the world, while others are not harmful to humans.