Over the course of October at London Heathrow Airport, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 54 minutes, implying an average daily decrease of 3 minutes, 48 seconds, and weekly decrease of 26 minutes, 35 seconds.
Polyester is a synthetic fiber derived from coal, air, water, and petroleum. Developed in a 20th-century laboratory, polyester fibers are formed from a chemical reaction between an acid and alcohol.
Polyester/Polyester Blend. Perhaps the most common of the synthetic fabrics, polyester is ubiquitous in outdoor and winter wear. It's durable and boasts resistance to chemicals, mildew, abrasion, stretch, and mildew. It's also water-repellant, which means that rather than absorbing sweat, it allows perspiration to build up inside the garment.