For example, a measurement given as 12.14 +/- 0.01 cm is more precise than one given as 12 +/- 1 cm. Higher precision does not necessarily imply higher accuracy. Statistical (random) Uncertainty: This is the inescapable fact that every time you repeat a measurement, you will get a slightly different value.
The earliest sunrise of the month at Athens Eleftherios Venizelos International Airport is 6:01 AM on June 13 and the latest sunrise is 4 minutes later at 6:04 AM on June 30. The earliest sunset is 8:40 PM on June 1 and the latest sunset is 10 minutes later at 8:50 PM on June 28.
June 12, 2011. Summer arrives in the northern hemisphere on June 21st -- the summer solstice, which is also the longest day of the year. But strangely enough, the solstice does not mark the day that the Sun rises the earliest. In fact, the date of earliest sunrise is about a week before the solstice. And the latest sunset occurs about a week after the solstice. The mismatch occurs for two reasons. First, Earth's orbit around the Sun is not a perfect circle.