A penumbral lunar eclipse is expected to be visible across the country early on Saturday morning if the skies are clear enough, according to the National Astronomical Research Institute of Thailand (Narit).
People will be able to view the event between 12.46am and 4.04am. It will be the second penumbral eclipse this year following one on Jan 11. A third and final one will take place on Nov 30.
This week's penumbral lunar eclipse will be followed by a solar eclipse on June 21.
During a penumbral lunar eclipse, a shadow will be seen immersing the full moon.
Suparerk Karuehanon, Narit's head of astronomy academic services, said the eclipse on Saturday will see the darkest shadow occur at 2.24am.
"Looking at it with the naked eye it will be quite subtle," he said.
"But it is more clearly seen through a telescope."
Meanwhile, Narit has announced the reopening of regional observatories to the public in Chiang Mai, Chachoengsao and Nakhon Ratchasima on June 19 after they were closed as a result of the Covid-19 outbreak.