The Lunar Calendar and the Full Moon Lantern Festival

Although the moon takes 27.3 days to orbit the earth it takes 29.5 days to complete its phases (because the earth is moving too). This makes it a bit tricky to nail down exactly on which date a full moon occurs, even in the lunar calendar. To cope with this some lunar months are 29 days and some are 30 days. In the wash-up the full moon usually occurs on the 15th or 16th day of each lunar month but not always.

 

For the Hoi An Full Moon Lantern Festival the organizers have taken all the complications away and the celebration occurs on the 14th day of the lunar calendar, regardless of when the full moon actually occurs.

 

Thus, in the Gregorian Calendar, the festival occurs on the following dates:

FULL MOON LANTERN FESTIVAL DATES 2020

14TH DAY OF LUNAR CALENDAR

8 January , 2020

7 February , 2020

7 March,  2020

6 April, 2020

6 May, 2020

5 June 2020

4 July, 2020

3 August, 2020

1 September, 2020

30 October, 2020

28  November, 2020

28 December, 2020

lanterns and lights in hoi an full moon lantern festival hoi an

For the those who would also like to know when the full moon actually falls see the following table.

Get married in Hoi An. Lanterns

REAL FULL MOON DATES FOR 2020

Gregorian Lunar
Jan 10

Feb 9

Mar 9

April 8

May 7

Jun 5

July 5

Aug 3

Sept 2

Oct 1

Oct 31

Nov 30

Dec 30

 

16 (12th month)

16 (1st month)

16 (2nd month)

16 (3rd month)

15 (4th month)

14 (4th month)

15 (5th month)

14 (6th month)

15 (7th month)

15 (8th month)

15 (9th month)

16 (10th month)

17(11th month)

 

To read about the actual festival, read our article about Full Moon Lantern Festival.

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