It’s time to start publishing calendars again. These “months” are based on 18 bright stars along the ecliptic as they cross the meridian around midnight. The large numbers represent the nights associated with each bright star’s midnight culmination. The small numbers represent the calendar days we are familiar with, in this case September. The other features are phenomena that make the nighttime sky interesting.
Markab is the bright star located on the southwest corner of the square of Pegasus. It is a blue-white star of magnitude 2.49 between 86 and 199 light years away.