It is the DISTANCE between earth and moon that governs the gravitational pull of EACH UPON THE OTHER. Since the moon's orbit around the earth is elliptical, the moon goes through perigee (its smallest distance to the earth) and apogee (its greatest distance) every month. Perigee and apogee can occur at any phase.
What is an Auction and how does it work? An Auction is where property is sold at a specific time and place to the highest bidder. Most auctions require a person to get a bidder number or other identifying item prior to bidding.
competitive bidding. Transparent' procurement method in which bids from competing contractors, suppliers, or vendors are invited by openly advertising the scope, specifications, and terms and conditions of the proposed contract as well as the criteria by which the bids will be evaluated. Competitive bidding aims at obtaining goods and services at the lowest prices by stimulating competition, and by preventing favoritism. In (1) open competitive bidding (also called open bidding), the sealed bids are opened in full view of all who may wish to witness the bid opening; in (2) closed competitive bidding (also called closed bidding), the sealed bids are opened in presence only of authorized personnel.