Weights and Measures
Argentina is three hours behind GMT for most of the year, and does not observe daylight savings (summer time). When the U.S. Eastern Time Zone is on daylight savings (during the Northern Hemisphere summer) and Argentina is on standard time, Buenos Aires is one hour ahead of New York; the rest of the year, there is a two-hour difference.
Throughout the country, nearly all outlets are 220 volts, 50 cycles, so converters are necessary for North American appliances like computers and electric razors (except for dual-voltage appliances). Traditional plugs have two rounded prongs, but more recent ones have three flat blades that form, roughly, an isosceles triangle; cheap adapters are widely available.
Adequately powered converters, though, are hard to find, so it’s better to bring one from overseas.
The metric system is official, but this doesn’t completely eliminate the variety of vernacular measures in everyday life. Rural folk often use the Spanish legua (league) of about five kilometers as a measure of distance, and the quintal of 46 kilos is also widely used, especially in wholesale markets and agricultural statistics.
© Wayne Bernhardson from Moon Argentina, 3rd edition