' An Act to preserve daylight and provide standard time for the United States ' was enacted on March 19, 1918. [See law] It both established standard time zones and set summer DST to begin on March 31, 1918. Daylight Saving Time was observed for seven months in 1918 and 1919.
Nitrate-rich foods include lettuce, parsley and spinach. âLeafy vegetables contain chemical nitrate that improves heart health,â the Mail Online reports. In a recent study, researchers looked at the effects of a nitrate-rich diet on rats.
Eat More Veggies to Boost Your Dietary Nitrates. Nitrate (chemical symbol NO3-) is an inorganic compound composed of nitrogen and oxygen found naturally in soil and water. The nitrate in our diet comes from both food and drinking water, the highest levels of dietary nitrate are found in vegetables. However, the actual amount of nitrate in vegetables can be highly variable depending on growing conditions.