TIME, DIALING CODES AND AREA CODES
INTERNATIONAL DIALING CODES
International dialing codes are split in to 3 parts; International Prefix,
Country Code and National Prefix (or Trunk Prefix). These parts are shown in the diagram below as on the site. Hover over the numbers
to see which international dialing code part they belong to.
The International Prefix is the international dialing code part used to dial out to a foreign country.
It tells the telephone network it is making an international call.
For a single country the International Prefix is the same no matter which foreign Country Code is dialed.
If the phone has a plus symbol this can be dialed instead of the International Prefix in most but not all cases.
The Country Code follows the International Prefix. It is the international dialing code part that
identifies the foreign country to connect to.
National Prefix (or Trunk Prefix)
The National Prefix is the dialing code part used when dialing a national number.
This is removed when dialing from a foreign country and is therefore crossed out
in the diagram below. The City Code or Area Code follows the National Prefix but the National Prefix and Area Codes are usually displayed together when people write their telephone numbers down.
Area Codes or City Codes are dialed before the local number.
WORLD TIME ZONES
Below the current time
displayed on the site the world time zone
is identified as
an offset from Greenwich Mean Time (GMT) which for our purposes
is the same as Coordinated Universal Time (UTC). The world time zone
for example means GMT plus 12 hours and 30 minutes. If the location uses daylight saving rules
then the adjustment will be shown following the initials DST, this is displayed crossed out during the winter.
To calculate the time difference
between two world time zones
time difference calculator