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Fifteen moons seventeen round! After the Lantern Festival, the second wave of cold air in Guangdong arrived

Today is the 15th Lantern Festival of the First Month of the Year of the Tiger. The first month is the first month of the lunar calendar, the ancients called the night "supper", as the first full moon night of the year, will tonight usher in the fullest moon?

Astronomical forecasts show that the fullest moon before and after the Lantern Festival this year is not on the fifteenth day of the first month, nor on the sixteenth day of the first month, but on the seventeenth day of the first month. The fullest hour of the moon will appear at 0:56 Beijing time on February 17.

Fifteen moons seventeen round! After the Lantern Festival, the second wave of cold air in Guangdong arrived

The 2019 Guangzhou Lantern Festival is now "Super Moon" Nandu reporter Tan Qingju photographed

Why is the fifteenth moon seventeen round?

Lin Yuan, a member of the Chinese Astronomical Society and an expert in astronomy science in Tianjin, introduced that every time the moon runs between the earth and the sun on the first day of the lunar calendar, the hemisphere illuminated by the sun carries the earth, we can't see the moon, called "new moon", also called "Shuo"; around the fifteenth day of the lunar calendar, the bright side of the moon is all facing the earth, and we can see the round moon, called "full moon", also called "looking". The length of time interval from "Shuo" to "Shuo", or from "Wang" to "Wang", is called a "Synodic Month", with an average of 29.53059 days.

Also on the first day of the lunar calendar, "Synod" may occur in the early morning, or in the morning, afternoon, or evening, and each "synodic month" itself has its own lengths and shorts. In this way, the "look" of the fullest moment of the moon can occur at the earliest on the night of the fourteenth day of the lunar calendar, and at the latest on the morning of the seventeenth day of the lunar calendar. However, because "Shuo" must be on the first day of each month of the lunar calendar, after "Shuo" on average, it takes another 14 days, 18 hours and 22 minutes to be "looking", so the "hope" of the fullest moment of the moon appears on the fifteenth and sixteenth days of the lunar calendar.

Statistics found that the most frequent occurrence of "full moon" is the sixteenth lunar calendar, followed by the fifteenth lunar calendar, the third is the seventeenth lunar calendar, and the least is the fourteenth lunar calendar.

"It is relatively rare for a 'fifteenth moon and seventeenth circle' like this year's Lantern Festival, the last time it appeared was on February 26, 2013 (the seventeenth day of the first month), and the next time it will reappear on March 1, 2029 (the seventeenth day of the first month). But no matter when it is round, the moon that people can see with the naked eye is basically no difference, it is the same flower good full moon, which will not affect people's appreciation of the moon on the night of the Lantern Festival. Lin Said.

Can I enjoy the moon in Guangdong tonight? When is the best monthly viewing?

Regardless of whether tonight's moon is the roundest, the circle of friends "Moon Appreciation PK Contest" must be a major attraction of the Lantern Festival. Do friends in Guangdong have the opportunity to apply for "going to war"?

Fifteen moons seventeen round! After the Lantern Festival, the second wave of cold air in Guangdong arrived

Last year's Lantern Festival, a screenshot of the circle of friends.

According to @ Guangdong weather news, this day and tomorrow two nights (15-16) guangdong west and north of the clouds chasing the moon, the eastern bright moon hanging high, and the moon is the fullest lunar seventeenth (17th) day, but the province is cloudy, it is difficult to appreciate the moon.

When is the best night of the Lantern Festival? Lin Yuan introduced that two hours after sunset is a good time to admire the moon. "One is that the moon at this time looks particularly large; the second is that the moon is beautiful silvery-white and pleasing to the eye; and the third is that the moon's horizon height is low, which is suitable for taking beautiful photos of 'continuous moon with landscapes'." Over time, the moon travels to the sky due south at midnight. At this time, the height of the moon's horizon reached the highest level in the whole night, and everything was silent, and the "Haoyue Top Sky Illumination" also had a different taste.

After the Lantern Festival, Guangdong welcomed the second strong cold air

After the Lantern Festival, even if the year is over, will the sunshine in Guangdong continue to be distributed? It is understood that tomorrow, the temperature in Guangdong will continue to rise, and the "painting style will change suddenly" from the 17th!

It is expected that most of the clouds on the 15th and 16th will generally pick up, and the weather will be cold in the morning and evening; on the 17th, the cities and counties in the central and western regions will turn to light rain, and most of the daytime temperatures will drop; on the 18th, the strong cold air forwards will affect northern Guangdong, and most of the temperature will drop due to precipitation and cold air. In addition, on the 16th and 17th, there is light fog or fog in the morning and evening in the cities and counties of the central and western regions. In the morning and evening, the weather is cold, and we must continue to do a good job in cold and warm work; the visibility of rain and fog weather is poor, the sea surface is windy, and attention should be paid to the safety of sea and land traffic.

The specific forecast is as follows:

Fifteen moons seventeen round! After the Lantern Festival, the second wave of cold air in Guangdong arrived

Screenshot of @Guangdong weather page

Synthesized from CCTV News, @Guangdong Weather

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