Terminalia

In 238 Censorinus stated that it was inserted after the Terminalia (23 February) and was followed by the last five days of February, i.e., a.d. VI, V, IV, III and prid.

In the far northwest, acacia woodlands are replaced by broadleaved Terminalia-Combretum woodlands, caused by a change in geology.

It has been variously proposed that a date like a.d. X Terminalia (known from an inscription in 94 BC) implied that its year 'was', 'was not', or 'might have been' intercalary.

The first part ended with the Terminalia on the 23rd, which was considered the end of the religious year, and the five remaining days formed the second part.

To avoid the nones falling on a nundine, where necessary an intercalary day was inserted "in the middle of the Terminalia, where they placed the intercalary month".