The concept was touted as an alternative, decimal measure of time. One of the supposed goals was to simplify the way people in different
time zones communicate about time, mostly by eliminating time zones altogether. It also does away with the division of the day into 12 or 24 parts (hours), then 60 parts (minutes), then 60 parts (seconds), then 1000 parts (milliseconds). Furthermore, there is no confusion between the
AM/PM system and
24-hour time.
Beats Instead of hours and minutes, the
mean solar day is divided into 1,000 parts called ''''. Each lasts 1 minute and 26.4 seconds. One is equal to one decimal minute in
French decimal time. Although Swatch does not specify units smaller than one ,
third party implementations have extended the standard by adding "centibeats" or "sub-beats", for extended precision: @248.00. Each "centibeat" is a hundredth of a and is therefore equal to one
French decimal second (0.864 seconds).{{cite web
Time zones There are no time zones; instead, the new time scale of Biel Mean Time (BMT) is used, based on the company's headquarters in Biel/Bienne, Switzerland. Despite the name, BMT does not refer to mean
solar time at the Biel/Bienne
meridian (7°15′E), but to the standard time there. It is equivalent to
Central European Time and
West Africa Time, or
UTC+1. Like UTC, Swatch Internet Time is the same throughout the world. For example, when the time is 875 , or @875, in New York, it is also @875 in Tokyo. Unlike civil time in most European countries, Internet Time does not observe
daylight saving time, and thus it matches Central European Time during (European) winter and
Western European Summer Time, which is observed by the United Kingdom, Ireland, Portugal and Spain's
Canary Islands during summer.
Notation The most distinctive aspect of Swatch Internet Time is its notation; as an example, "@248" would indicate a time 248 after midnight, equivalent to a fractional day of 0.248 CET, or 04:57:07.2 UTC. No explicit format was provided for dates, although the Swatch website formerly displayed the Gregorian calendar date in the order
day-month-year, separated by periods and prefixed by the letter
d (e.g. d31.01.99).
Calculation from UTC+1 The formula for calculating the time in from UTC+1 is: \left\lfloor\frac{3600h+60m+s}{86.4}\right\rfloor, Where
h is UTC+1 hours and
m is UTC+1 minutes. The result is rounded down.{{cite web
Start of the day Example cities across the globe at @000 (midnight): ==See also==