News thumbnail
Science / Thu, 17 Sep 2026 Nation Thailand

Venus to reach peak brightness in Thailand’s western sky on Sept 22

The National Astronomical Research Institute of Thailand (NARIT) is inviting the public to observe Venus at its brightest, a phenomenon known as “The Greatest Brilliancy”, in the early evening on Tuesday (September 22, 2026). The planet will stand out in the western sky after sunset and remain visible until about 7.40pm. If the sky is clear and there is no rain, it will be visible to the naked eye across Thailand. Viewed through a telescope, Venus will resemble a crescent Moon. In the early evening on Tuesday, Venus will move into the position at which it appears brightest, standing out clearly in the western sky from sunset until about 7.40pm.

The National Astronomical Research Institute of Thailand (NARIT) is inviting the public to observe Venus at its brightest, a phenomenon known as “The Greatest Brilliancy”, in the early evening on Tuesday (September 22, 2026).

The planet will stand out in the western sky after sunset and remain visible until about 7.40pm.

If the sky is clear and there is no rain, it will be visible to the naked eye across Thailand.

Viewed through a telescope, Venus will resemble a crescent Moon.

In the early evening on Tuesday, Venus will move into the position at which it appears brightest, standing out clearly in the western sky from sunset until about 7.40pm.

Its apparent magnitude is expected to reach -4.6, with more negative values indicating greater brightness.

Through a telescope, the planet will appear as a crescent resembling the Moon.

© All Rights Reserved.