Six events per day.
Gregorian calendar, and local time. It is preferable to choose only events whose date is little or no debate.
A preference for events that have had historical significance and long-term consequences, affecting a large number of people.
Deaths and births are to be avoided, except for an exceptional event that had significant consequences (eg assassination of Henri IV).
The elements put forward must be balanced to a certain extent over time, not be too Franco-centered and be diversified (political history, science, economy, medicine, etc.).
Each event should only be mentioned for one day.
Only one image per day is possible.