Countdown is a sequence of counting in reverse from the present time to calculate the remaining time before an event occurred or for the targeted time spent is zero. For an example, prior to a launch time of a space rocket, the remaining 10 seconds before launching is counted down backward in the sequence of 10, 9, 8, … 3, 2, 1, 0. At the zero second the rocket is ignited and the spacecraft moves toward orbit. Another popular example is the countdown towards new year eve which is used to count the last ten seconds before 00:00 time at midnight of 31 December where the calender will change to a new year (i.e.. from 2013 to 2014). Countdown is a common thing used in preparation to start or enter a very important event in waiting or targeted time in the future. A countdown is used to mark the importance of an event. Wherever, a countdown is used prior to the event, it reflects that the event counted down is an important one. Now take a look at the following virtual counter below.

As you can see from the above counter, it is counting down toward a targeted time in the future or in other words, it is counting the remaining time that must be spent before it becomes zero. Let us have look at the counter above once again, and try to guess what event or day which has become the target of the countdown process. Sure, your guess is right. It is showing the countdown to 1 January 2015.