Saturday night will stretch longer by a second.

*BlackFox · **Joined:** Sep 2008 **Posts:** 7923 **Location:**

A leap second.

Quote:

International timekeepers are adding a second to the clock at midnight universal time Saturday, June 30, going into July 1. That's 8 p.m. EDT Saturday. Universal time will be 11:59:59 and then the unusual reading of 11:59:60 before it hits midnight.

A combination of factors, including Earth slowing down a bit from the tidal pull of the moon, and an atomic clock that's a hair too fast, means that periodically timekeepers have to synchronize the official atomic clocks, said Daniel Gambis, head of the Earth Orientation Service in Paris that coordinates leap seconds.
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Key-J · **Posted:** Sat Jun 30, 2012 1:23 am

Nice,

And i was hoping to wind my watch tonight, guess ill have to compensate a WHOLE second... Jebus.

Although in all seriousness, a Second actually could have a big effect on things around the world, that rely heavily on accurate time, Stocks and GPS for example.

I don't know if this is the right number, but i heard that If a GPS is off by 1 Second, it can make a difference of about 3 Kilometres.

Squirt · **Joined:** Jan 2008 **Posts:** 8186 **Location:**

Quote:

One of the most significant error sources is the GPS receiver's clock. Because of the very large value of the speed of light, c, the estimated distances from the GPS receiver to the satellites, the pseudoranges, are very sensitive to errors in the GPS receiver clock; for example an error of one microsecond (0.000 001 second) corresponds to an error of 300 metres (980 ft).

source:http://en.wikipedia.org/wiki/Global_Positioning_System#Correcting_a_GPS_receiver.27s_clock