Okta Okta In meteorology, an okta is a unit of measurement used to describe the amount of cloud cover at any given location such as a weather station. Sky conditions are estimated in terms of how many eighths of the sky are covered in cloud, ranging from 0 oktas (completely clear sky) through to 8 oktas (completely overcast). In addition, in the SYNOP code there is an extra cloud cover indicator '9' indicating that the sky is totally obscured (i.e. hidden from view), usually due to dense fog or heavy snow. When used in weather charts, okta measurements are shown by
Thai units of measurement "wa", "ngan" and "rai" are still used in measurements of land area. The "baht" is still used as a unit of measurement in gold trading. However, one "baht" of 96.5% gold bullion is defined as 15.16 grams rather than the generic standard of 15 grams. The "baht" has also become the name of the currency of Thailand, which was originally fixed to the corresponding mass of silver. Thai units of measurement Thailand adopted the metric system on 17 December 1923. However, old Thai units are still in common use, especially for measurements of land. Before metrication, the traditional system of