What day is 12 day of Christmas give out pipers pipping?

On the twelfth day of Christmas,

my true love sent to me

Twelve drummers drumming,

Eleven pipers piping,

Ten lords a-leaping,

Nine ladies dancing,

Eight maids a-milking,

Seven swans a-swimming,

Six geese a-laying,

Five golden rings,

Four calling birds,

Three French hens,

Two turtle doves,

And a partridge in a pear tree!