whois - What is the expiration date of a domain? -

when whois records of domain, contains expiration date. wondering expiration date of domain? how date has been set? happen domain after gets expired? set date?

network solutions provides breakdown of happens during expiration , deletion periods.

in short, page:

if expired domain name registration not renewed during grace period provided us, pursuant our service agreement, rather delete domain name registration, may, in our sole discretion, renew , transfer domain name registration network solutions or third party on customer’s behalf.