Boring p24 (or trans-pulsar on figure eight) is a period-24 oscillator composed of a pulsar and a figure eight.
Despite being composed of two oscillators of smaller period (3 and 8 respectively), it is considered non-trivial because it has two cells that are alive in one generation and dead in the other 23, and two more otherwise period-8 cells that are alive in one additional generation.
On Catagolue, it is the most common period 24 oscillator, being more common than the similar uninteresting p24.
The boring p24 first appeared naturally on August 27, 2015, in a soup found by Brett Berger. Before this, symmetric figure-eight-on-pulsar variants had appeared only semi-naturally.