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.
Synthetic fibres like polyester can be made to look like real silk to the untrained eye. Although synthetic fabrics can be deliberately priced high, low prices usually indicate the fabric is not genuine silk. Real silk usually costs at least ten times as much as synthetics to produce. Lustre.