<P> DST inherits and can magnify the disadvantages of standard time . For example, when reading a sundial, one must compensate for it along with time zone and natural discrepancies . Also, sun - exposure guidelines such as avoiding the sun within two hours of noon become less accurate when DST is in effect . </P> <P> As explained by Richard Meade in the English Journal of the (American) National Council of Teachers of English, the form daylight savings time (with an "s") was already in 1978 much more common than the older form daylight saving time in American English ("the change has been virtually accomplished"). Nevertheless, even dictionaries such as Merriam - Webster's, American Heritage, and Oxford, which describe actual usage instead of prescribing outdated usage (and therefore also list the newer form), still list the older form first . This is because the older form is still very common in print and preferred by many editors . ("Although daylight saving time is considered correct, daylight savings time (with an "s") is commonly used. ") The first two words are sometimes hyphenated (daylight - saving (s) time). Merriam - Webster's also lists the forms daylight saving (without "time"), daylight savings (without "time"), and daylight time . The Oxford Dictionary of American Usage and Style explains the development and current situation as follows: "Although the singular form daylight saving time is the original one, dating from the early 20th century--and is preferred by some usage critics--the plural form is now extremely common in AmE . (...) The rise of daylight savings time appears to have resulted from the avoidance of a miscue: when saving is used, readers might puzzle momentarily over whether saving is a gerund (the saving of daylight) or a participle (the time for saving). (...) Using savings as the adjective--as in savings account or savings bond--makes perfect sense . More than that, it ought to be accepted as the better form ." </P> <P> In Britain, Willett's 1907 proposal used the term daylight saving, but by 1911 the term summer time replaced daylight saving time in draft legislation . The same or similar expressions are used in many other languages: Sommerzeit in German, zomertijd in Dutch, kesäaika in Finnish, horario de verano or hora de verano in Spanish, and heure d'été in French . </P> <P> The name of local time typically changes when DST is observed . American English replaces standard with daylight: for example, Pacific Standard Time (PST) becomes Pacific Daylight Time (PDT). In the United Kingdom, the standard term for UK time when advanced by one hour is British Summer Time (BST), and British English typically inserts summer into other time zone names, e.g. Central European Time (CET) becomes Central European Summer Time (CEST). </P>

What does it mean daylight saving time ends