Gmt is how many hours behind est

Daylight savings time adds 1 hour to the local standard real time. Twenty four hour time does not use "am" or "pm", but courts hours from midnight 0 hours to 11 pm 23 hours.

Daylight savings time DST is used in the summer months in some regions. DST is 1 hour ahead of standard time. There is no consistency between regions as to when DST takes affect, or reverts back to standard real time. DST was never practical and will eventually be phased out obsolete. To account for those missing seconds, the time standard needs to be periodically adjusted to follow the real, atomic time — and this is where UTC comes in.

UTC is a time standard that sets the base for time keeping and time zones around the world. However, in the United Kingdom, GMT is still being used for civil purposes, even though not formally.

The Greenwich Mean Time was created in England and adopted at the International Meridian Conference of ; then, the Earth was split into 24 time zones, with each zone being based on the Greenwich Meridian Time. UTC time is kept using extremely precise atomic clocks that are placed in various locations around the world. UTC also has a leap second system in place.

Periodically, a second is added to UTC to make up for the difference. Up to date, 27 additions have been made, so while GMT may sometimes be used to refer to a time standard, it would already be 27 seconds late — whereas UTC is not, thanks to those atomic clocks. For the sake of clarity, though, just remember that GMT now defines a time zone along the zero longitude, while UTC is a precise time standard based on atomic clocks.

Unlike usual time zones, Greenwich Mean Time is calculated based on the sun. Therefore, GMT is more of a clock time and not an astronomical time that varies during the year. Instead, GMT is measured by a clock every day.

The main purpose of Greenwich Mean Time is to standardize time regardless of the location. Consequently, GMT watches are widely used by travelers. Since GMT is not a standard time that has an offset from UTC, converting it to other time zones can be a little bit more complicated.

GMT is no longer used within the community of scientists but sometimes people still want to find out how GMT works and how to convert it to other time zones. The reason is very simple. GMT is officially used in some European and African countries. Find out about New Zealand's time zones and Daylight Saving, as well as public and school holidays, to help you plan your trip.

See what time it is in New Zealand opens in new window right now. It's important to be aware of public holidays which may fall during your trip to New Zealand. Accommodation and activities will be busier than usual, and some public services, like transport, may be limited.

Public holidays are national holidays, while anniversary dates are holidays within a particular region. See the dates for public holidays and anniversary days opens in new window in New Zealand. Like public holidays, school holidays mean more people travelling and doing activities around the country.