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.
The best time to visit Athens is in the fall and spring when the weather is agreeable and sunshine is pretty much a guarantee. Not to mention, crowds are thinner and hotel rates are cheaper. However, because of its Mediterranean location, Greece experiences warm weather throughout the year. Summer brings stifling heat and hordes of tourists, so we'd recommend avoiding Athens during this season.