detydragaudje lujvo

x1 is a leap day of year x2 at location x3 in calendary system x3.

This is a day which is included or removed from a 'normal' (yearly) progression of the calendar in order to correct the aligment between the reported date and the passage of physical time (such as that which is evinced by the seasons). See also: tcikydragausnidu.

In notes:

x1 is a leap second of/on day/larger time unit x2 at location x3 according to calendary system x4.