@TayanaLorna
When we arrive in Macapa at the mouth of the Amazon River, we will be at latitude 0.04N. We will still be in the Northern Hemisphere. However, once we reach Santarem, we will be at latitude 2.46S. We will have crossed the Equator.
If we did this at sea there would be a ceremony. For first timers (this includes us), this is an accomplishment. Was there a similar celebration on the River?