djecitsi lujvo

x1 is a calendar day defined by interval/property x2, of year(s) x3.

See also dorcte, detydei.

In notes:

citsi
x1 is a season/is seasonal [cyclical interval], defined by interval/property x2, of year(s) x3.
dorcte
x1 is the calendar day of event x2 at location x3