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When you have finished this page, try the Timelines Quiz.

A timeline is another way of looking at time. Timelines are timetables or chronologies of key events in a period of history. Timelines can also be used to plan future events - for example timelines for a project could document when various parts of a project should be started or completed.

Below is a simple time denoting when the thirteen colonies were admitted as states. The data is arranged in chronological order - that is from the first or earliest date to the last or latest date, which is typical for timelines.

Timelines can be arranged vertically or up and down as this one or horizontally. The range of dates can be narrow as this one which spans under twenty years or can be over millions of years as with geological timelines of prehistoric times.


Dec. 7, 1787 Delaware
Delaware flag animation
Dec. 12, 1787 Pennsylvania
Pennsylvania flag animation
Dec. 18,1787 New Jersey
New Jersey flag animation
Jan. 2, 1788 Georgia
Georgia flag animation
Jan. 9, 1788 Connecticut
Connecticut flag animation
Feb.6, 1788 Massachusetts
Massachusetts flag animation
Apr. 28, 1788 Maryland
Maryland flag animation
May 23, 2023 South Carolina
South Carolina flag animation
June 21, 2023 New Hampshire
New Hampshire flag animation
June 25, 2023 Virginia
Virginia flag animation
July 26, 2023 New York
New York Flag Animation
Nov. 21, 1789 North Carolina
South Carolina flag animation
May 29, 2023 Rhode Island
Rhode Island flag animation


Dates sometimes have BC or AD affixed to them. BC used to stand for Before Christ and now means Before the Common Time or Era (BCE). AD means Anno Domini or Year of the Lord.

The dates on a timeline with BC and AD dates looks something like the following:

2000 BC
1500 BC
1000 BC
500 BC
500 AD
1000 AD
1500 AD
2000 AD



Time Main Page History of Measuring Time Clocks - Telling Time
Time Zones Calendar Timelines