Choosing the preferred closure allows for an accurate RNF (required neck finish) design. HDPE bottles neck finish dimensions are, of course, custom designed into the bottle mold. PET plastic bottle neck finishes are available, commonly in a preform, to fit most any closure or can be custom designed to fit a new closure.
There are 100 years in a century; when used to denote time periods, a century starts with year 1 and ends with year 100. For example, the 21st century describes the period of time from 2001 to 2100. Continue Reading. The word century also refers to a group of 100 similar items. A century was a sub-unit of the Roman army that contained 100 soldiers. Races referred to as centuries contain 100 units (such as 100 yards). Century was first used in the year 1533.
Another way to express it is; we are 16 years into the 21 century and in 84 years, the 22 century will begin with 21oo. Early on, it was determined that the math of 365 days in a year was slightly off and the compromise of 6 hours or a quarter of a day was added to the adjusted annual calender.