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Lanka marks ‘Earth’s Birthday’ on Perihelion Day

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Anura C. Perera (sitting) celebrating the Perihelion Day in the presence of guests Chance Sports proprietor Lasantha Amarasinghe, Engineer Ajantha Seneviratne, former Lions Club chief Mahinda Perera, and science writer Rusin Thatsara

Astronomer Anura C. Perera led the world’s first-ever celebration of Earth’s ‘birthday’ on Jan 4, commemorating the day the planet reached its closest point to the Sun, known as Perihelion Day. The ceremony took place at the Tharaka Niwasa in Sapumal Place, Rajagiriya.

The date holds cosmic significance as the Earth begins its annual journey around the Sun at this closest proximity, which occurs once a year due to the planet’s elliptical orbit. Interestingly, when the modern calendar came into use some 400 years ago, Perihelion fell on January 1, aligning the new year with the Earth’s orbital milestone. Over time, due to the ever-changing nature of the universe, Perihelion now occurs later, this year on Jan 4.

During the event, Perera highlighted Earth’s fascinating dynamics. The planet rotates on its axis at an impressive speed of 1,670 km/h, completes its annual revolution around the Sun at 107,200 km/h, and, along with the Sun and other celestial companions, hurtles through the Milky Way galaxy at a staggering 828,000 km/h.

He emphasized the significance of Perihelion Day, when Earth is approximately 147.1 million kilometers (91.4 million miles) from the Sun, compared to its farthest point, or aphelion, in July, when the distance grows to 152.1 million kilometers (94.5 million miles).

“This is not just an astronomical event but a reminder of the dynamic relationship between our planet and the Sun,” said Perera.

The celebration of Earth’s “birthday” on Perihelion Day marks a new chapter in global astronomy awareness, merging science with cultural appreciation for our home planet.



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New landslide alerts as Ditwah aftermath worsens

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Death toll hits 627, over 2.17 mn affected across 25 districts

The Disaster Management Centre (DMC) has issued fresh landslide warnings as relentless heavy rains continue to pound regions still reeling from Cyclone Ditwah.

The Department of Meteorology has cautioned that thunderstorms accompanied by heavy rainfall are likely across parts of the Western and Sabaragamuwa provinces, as well as Galle and Matara districts. Rainfall is expected to intensify further on the 9th, 10th, and 11th of this month.

Authorities urged the public to stay indoors in safe buildings or vehicles and avoid open areas such as coconut and tea plantations, playgrounds, and reservoirs, during adverse weather events. The public has also been advised against using fixed-line phones, electrical appliances, and open vehicles like bicycles, tractors, and boats due to the risk of lightning strikes and strong winds.

With the northeast monsoon gradually intensifying, occasional rains are also expected in the Northern, North Central, Eastern, and Uva provinces, with some areas of the Batticaloa district expected to receive up to 75 mm of rainfall. Misty conditions may affect parts of the Western, Sabaragamuwa, Central, and Uva provinces during early mornings.

The DMC has said the floods and landslides, triggered by Cyclone Ditwah, have so far claimed 627 lives, with 190 people still missing. More than 2.17 million people, across 25 districts, have been affected, including 611,530 families. A total of 4,517 houses have been destroyed, and 76,066 partially damaged, leaving over 80,500 homes affected, nationwide.

Kandy is the hardest hit District, recording 232 deaths, 81 missing persons, 1,800 fully destroyed houses, and over 13,000 partially damaged homes. Puttalam and Kurunegala reported 573 and 480 fully destroyed houses, respectively, while Kegalle, Ratnapura, Badulla, and Gampaha also suffered extensive property losses.

Authorities have set up 956 safety centres across the country, currently sheltering 27,663 families, totaling 89,857 people. Relief and rehabilitation efforts are ongoing, with priority given to food, water, and medical aid. Officials warned residents in landslide-prone areas to remain in shelters until conditions stabilise.

by Chaminda Silva

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Over 35,000 drug offenders nabbed in 36 days

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In a massive nationwide crackdown under the Ratama Ekata (A Nation United) Drug Prevention Programme, police have taken 35,855 drug traffickers and users into custody across the country in just 36 days, according to Deputy Inspector General of Police Ashoka Dharmasena.

During the operation, authorities had seized 268 kilos of heroin and 994 kilos of ‘Ice’ (crystal methamphetamine), Dharmasena added.

He also highlighted that since January 2025, the ongoing campaign had resulted in the confiscation of 1,754 kilos of heroin, 3,535 kilos of ‘Ice,’ and 15,975 kilos of cannabis, marking a significant blow to drug networks operating nationwide.

The Police Narcotics Bureau Chief said that the drive was part of an ongoing effort to curb drug abuse and trafficking across the country, sending a strong message to offenders that law enforcement would leave no stone unturned in tackling the menace.

by Norman Palihawadane and Hemantha Randunu

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Rising water level in Malwathu Oya triggers alert in Thanthirimale

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The Hydrology and Disaster Management Directorate yesterday issued a cautionary alert as the water level in the Malwathu Oya continued to rise steadily, increasing the possibility of localised flooding in vulnerable settlements downstream.

As of 3.30 p.m. yesterday, the river gauge at Thanthirimale reported a water level of 6.48 metres, surpassing the official alert threshold of 5.00 metres and edging closer to the minor flood level of 6.80 metres. Officials classified the situation as “Alert – Rising”, prompting heightened field surveillance.

“We are monitoring the trend closely because the gauge shows a continuous rise. Even moderate rainfall upstream could elevate the risk of inundation across low-lying agricultural communities,” said a senior hydrology officer attached to the monitoring team.

Director (Hydrology and Disaster Management) Eng. L. S. Sooriyabandara, reviewing the bulletin, said the Department was alerting regional disaster coordinators to ensure preparedness measures were in place.

“Our teams are following this closely. Residents living adjacent to low-elevation areas of Malwathu Oya should stay updated on advisories issued over the next 24 hours,” he said.

The situation across other major river systems remained stable. Readings in Kelani, Kalu, Nilwala, Gin, Kirindi and Mahaweli rivers indicated no immediate threat. For instance, the Kelani Ganga at Nagalagam Street recorded 2.80 ft—well below its alert level of 4 ft—while Ratnapura on the Kalu Ganga continued at a safe 2.04 m against its alert threshold of 5.20 m.

Checking Officer W.A.S. Saumya (H.D.S.-Act) said that the forecast remains favourable, with many basin stations recording minimal rainfall during the six-hour interval up to 3.00 p.m. “Although the overall rainfall patterns appear low, it is critical not to be complacent given upstream variability,” Saumya said.

The latest river assessment bulletin was prepared by Duty Hydrology Analyst K.K.C.U. Dilshan, who confirmed that monitoring will continue overnight.

Authorities urged farming communities, school transport operators and residents living close to the floodplain of Malwathu Oya to remain cautious, refrain from night-time river crossings and heed updates issued through local administrative units and disaster offices.

By Ifham Nizam

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