php-calendar 0.5.5-2 (ppc64el binary) in ubuntu xenial

 Calendar provides an API for building Calendar data structures. Using
 the simple iterator and it's "query" API, a user interface can easily be
 built on top of the calendar data structure, at the same time easily
 connecting it to some kind of underlying data store, where "event" information
 is being held.
 .
 It provides different calculation "engines" the default being based on
 Unix timestamps (offering fastest performance) with an alternative using
 PEAR::Date which extends the calendar past the limitations of Unix timestamps.
 Other engines should be implementable for other types of calendar (e.g. a
 Chinese Calendar based on lunar cycles).