[Chi-Town]

A view from the patio. Click on it.

[chuckinca]

Very Cool!

Thanks for the heads up.

Per What is a Blue Moon?


Two definitions

Blue Moon = The third full Moon in an astronomical season with 4 full Moons (versus the normal 3)
Blue Moon = The second full Moon in a month with two full Moons.


Next Blue Moon (1):

(Third full Moon in a season with 4)

21 May, 2016
18 May, 2019
22 August, 2021
19 August, 2024

Next Blue Moon (2):

(Second full Moon in a month)

31 January, 2018
31 March, 2018
31 October, 2020

[Chi-Town]

Originally Posted by chuckinca

Very Cool!

Thanks for the heads up.

Per What is a Blue Moon?


Two definitions

Blue Moon = The third full Moon in an astronomical season with 4 full Moons (versus the normal 3)
Blue Moon = The second full Moon in a month with two full Moons.


Next Blue Moon (1):

(Third full Moon in a season with 4)

21 May, 2016
18 May, 2019
22 August, 2021
19 August, 2024

Next Blue Moon (2):

(Second full Moon in a month)

31 January, 2018
31 March, 2018
31 October, 2020

Interesting that there are two meanings to a Blue Moon. That explains how we could have one on the 21st.

[chuckinca]

I couldn't understand that either. Most Blue Moons I remember were in the last few days of a month - second full moon in one month.

Googled it and discovered there are two definitions.

.