This Year's Chuseok Full Moon Rises Around 7 PM on the 10th

Korean Weather Research Institute, 5-Day Forecast

Full Moon (24th Celestial Photography Contest Award Winner) ? Kim Seok-hee. Photo by Korea Astronomy and Space Science Institute

[Asia Economy Reporter Kim Bong-su] The Korea Astronomy and Space Science Institute forecasted on the 5th that the full moon of Chuseok will rise around 7 PM on the 10th. In Seoul, the moon will rise at 7:04 PM, and the highest point will be reached just after midnight at 12:47 AM on the 11th. The time when the moon is positioned opposite the sun, becoming a completely full moon (mang望), is at 6:59 PM on Chuseok day, the 10th. However, at this time, the moon has not yet risen, so it cannot be seen.

The full moon refers to the round moon that rises on the night of the 15th day of the lunar calendar. The 1st day of the lunar calendar includes the time when the moon passes in the same direction as the sun (new moon), and lunar dates are assigned at equal intervals (24 hours) from this day. For example, if the new moon occurs late at night on the 1st day of the lunar calendar, the moon rising on the 15th day may not be completely full because it has not yet reached the opposite side of the sun.

Separately, due to the moon’s elliptical orbit, the actual time it takes to face the opposite side of the sun (mang) is not constant, so the exact moment when the moon becomes completely full can be before or after the 15th day of the lunar calendar.

These two main reasons can cause the full moon to not be perfectly round. The new moon time for this lunar September is at 6:55 AM on September 26 (solar calendar).

This content was produced with the assistance of AI translation services.