Area of low atmospheric pressure along the Equator, in the intertropical convergence zone where the northeast and southeast trade winds converge. The doldrums are characterized by calm or very light winds, during which there may be sudden squalls and stormy weather. For this reason the areas are avoided as far as possible by sailing ships.
The sun of freedom rises from the Caribbean Sea. The stars represent Costa Rica's seven provinces. Red was added to the blue and white flag to reflect the French tricolour. Effective date: 29 September 1848.