B How common for almost same solar eclipse 17 months later?

[swampwiz]

I see that South America (Chile/Argentina) will be getting a total solar eclipse this winter (i.e., winter there) and then another one only 17 months later that seems to be along the same type of path, albeit a little bit south. This can't be very common.

https://en.wikipedia.org/wiki/Solar_eclipse_of_July_2,_2019
https://en.wikipedia.org/wiki/Solar_eclipse_of_December_14,_2020

 

[Helios]

Note that 17 months is near a whole number of days. That sends the same lunar phase right back to the same time zone on Earth. Note that 17 months is nearly 1 & 3/8 years.

This eclipse cycle has 3 eclipse seasons. We can write the Saros-Inex notation;
Saros = 358*E - 61*M = 37 S
Inex = 38*M - 223*E = -23 I

This eclipse cycle is written 37 S -23 I. It won't repeat. The cycle contains a Pentalunex. There are about 34 Pentalunex every 123 years, and 3 ways 17 months can contain it.

 

[davenn]

I see that South America (Chile/Argentina) will be getting a total solar eclipse this winter (i.e., winter there) and then another one only 17 months later that seems to be along the same type of path, albeit a little bit south. This can't be very common.

Found the graphic I stored so long ago ... It might enlighten you

Do you see the patterns ?

Dave