There is an annular solar eclipse to watch, this Thursday, during the Portuguese holiday. According to the Lisbon Astronomical Observatory (OAL) It will be visible throughout the Portuguese territory as a partial solar eclipse.
According to the interpretations of the OAL, an annular solar eclipse is observed when the moon’s shadow is over the Earth: “The moon’s shadow over Earth, that is, the region where the annular eclipse is, will follow a path in northeastern America from north to northeast Asia, through Greenland and the Arctic Ocean. Maximum The duration of the annular is 3 minutes and 48 seconds. The eclipse will be visible from northeastern North America, Europe, northern Asia and the northern Atlantic Ocean.”
In Portugal, this phenomenon will be visible only as a partial solar eclipse and “little perceptible, as the percentages of the solar area covered are very low, ranging from 4% to 10% on the mainland, 30% in the Azores and 6% in Madeira.” However, OAL warns that “although the luminosity change is not noticeable, a partial eclipse is easily observable when looking at the sun with safety glasses.”
In Lisbon, it starts at 9:47 a.m., with a maximum of 10:32 a.m., and ends about an hour later, at 11:21 a.m. In Porto it starts at 9:48 a.m., maxes out at 10:38 a.m., and ends at 11:33 a.m. In Faro, Algarve, it starts at 9:51 AM and ends at 11:10 AM. The maximum was reached at 10:29. It will also be visible in Coimbra: it starts at 9:48 am, reaches its maximum at 10:36 am, and ends at 11:28 am. On the islands, a partial solar eclipse will be visible between 8:23 a.m. and 10:54 a.m.
OAL emphasizes that all precautions should be taken when observing the sun. “Be careful, make sure you know all the dangers and safe ways to watch the sun and report, and help, those who don’t know,” he warns. OAL in partnership with the Directorate General of Health and the Portuguese Society of Ophthalmology They tell you all the precautions you must take if you want to monitor the phenomenon.