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  • Moon watching tips for Mid-Autumn Festival 2017

  • Friday, 29th September 2017

The Mid-Autumn Festival this year falls on October 4 (Wednesday) and the full moon (Note) will occur at 2.40am on October 6 (17th day of the 8th Lunar Month). If weather permits, a bright and clear moon may be observed at night during the Mid-Autumn Festival period.

To assist moon watching by the public, the times of moonrise, transit, moonset, and full moon during the Mid-Autumn Festival period are listed in the table below. At transit, the moon passes the local meridian due south and its elevation is the highest of the night.

October 3 (Tuesday) – the eve of the Mid-Autumn Festival
        Moonrise 4.38pm
        Transit (Elevation 59 degrees) 10.34pm
        Moonset 4.33am (next morning)
October 4 (Wednesday) – Mid-Autumn Festival
        Moonrise 5.19pm
        Transit (Elevation 63 degrees)
11.23pm
        Moonset 5.30am (next morning)
October 5 (Thursday) – the day following the Mid-Autumn Festival
        Moonrise 6.01pm
        Transit (Elevation 68 degrees) 0.13am (next morning)
        Full Moon (Direction due west-southwest, elevation 49 degrees) 2.40am (next morning)
        Moonset 6.28am (next morning)

The full moon at Mid-Autumn Festival usually occurs on the 15th day or 16th day of the 8th Lunar Month, and occasionally on the 17th day. The last time the Mid-Autumn full moon occurred on the 17th day of the 8th Lunar Month was in 2016, and the next time will occur in 2026.

For the latest weather conditions during the Mid-Autumn Festival period, please refer to the 9-day Weather Forecast issued by the Hong Kong Observatory (www.weather.gov.hk/wxinfo/currwx/fnd.htm) for the planning of moon-watching activities.

Note: At full moon, the Moon as seen from the Earth is completely illuminated with the Moon and the Sun located on the opposite sides of the Earth.

Figure