Make your own Papophoplon!
The customisable Papophoplon You can now make your own Papophoplon. Enter your longitude and time zone offset from Coordinated Universal Time (UTC) to find out
April 12, 2026
The customisable Papophoplon You can now make your own Papophoplon. Enter your longitude and time zone offset from Coordinated Universal Time (UTC) to find out
Stop looking for noon at 2 pm — just find it! Note for non-French speakers: there is an expression in French about : “Looking for
We know that solar time differs from legal time and that this difference varies throughout the year. Are there any days when the difference is
Here is a Geogebra animation that allows you to visualise the equation of time due to obliquity (the tilt of the Earth on its axis
If you do not have a physical papophoplon, you can still find out the difference between legal time (the time on your watch) and solar
In this article, we explain the three adjustments made by the Papophoplon. 1. Summer time or winter time? The first difference between solar time and
How to convert solar time to clock time? Frustrated by looking at a sundial and finding that it doesn’t show the same time as your
As the name suggests, a nova is initially detected as a new star. In reality, it is an existing star, which suddenly becomes much brighter:
1. What is daytime? True solar day vs. mean day According to the simplest definition, the day is the period that separates two successive passages
Instructions for use This GeoGebra animation replaces the reduction tables used in astronomical navigation. Step 1: Enter your estimated position Use the first two sliders: