Abraxas3d W5NYVSomething interesting is coming up in a few days. April 17-19 2026 is where the second derivative of the Doppler shift is zero, between Earth and Venus. This is related to Earth-Venus-Earth #EVE communications attempts coming up in October 2026.
This is the inflection point of the rate-of-change curve. In other words, it's where the Doppler shift is accelerating fastest, before starting to decelerate. We can see that in our link analysis! Here it is:
