Just over a year after a strong earthquake caused extensive damage to houses and property on Skyros, the western Aegean island was shaken again early yesterday by a quake felt over much of central Greece. But, unlike the earthquake that registered 5.8 on the Richter Scale and damaged 150 houses and the island capital’s hilltop medieval castle on July 26, 2001, no damage was reported after yesterday’s 5.4-Richter tremor. According to the Athens Geodynamic Institute, the earthquake occurred at 1.19 a.m. and had its epicenter 120 kilometers north of Athens, under the seabed south of Skyros and east of Evia. Several smaller aftershocks followed. «Nobody was particularly worried, and people did not spill out onto the streets,» Skyros Mayor Dimitris Angelis said. «We received no calls concerning damage, nor yet have our people noticed anything of the sort.» Another four moderately strong earthquakes struck Skyros after last July’s quake. Today is the third anniversary of the 5.9-Richter quake that leveled parts of northwestern Athens and killed 143 people.