Different cultures have developed different business habits and trends, a fact that still needs to be contended with in our modern corporate environment. While globalization has certainly reduced the overall number of differences between different cultures and their meeting styles by allowing a freer flow of ideas, it still falls to the meeting planners to understand the different concepts different cultures have about time and business etiquette.
For example, in the United States and England meetings start and stop at a pre-appointed time regardless of nearly anything else. In fact, some sketch comedy troupes have made fun of this reliance on time be showing whole middle management teams unable to leave a burning meeting room because it was not yet time or suffering some similar fate while bound to the tick-tock of a clock.
In some European cultures, particular Spain and Italy, meetings might begin at a predetermined time or perhaps a little later but they do not end until a resolution has been reached. This means that scheduling an afternoon meeting might be taken as a sign of low significance by some as there is always the likelihood that a morning meeting would run long. In some Asian cultures time is less important and meetings might begin whenever all parties are ready and may end for any reason or for little discernible reason at all.

