A reminder to oneself to do something important.

(chemistry) Initialism of xanthosine monophosphate. / (computing) Initialism of Extensible Metadata Platform. / (computing) Initialism of Extreme Memory Profile.

The start of the last hour of the day on the 24-hour clock i.e. 23:00. / The number two thousand three hundred. / The year 2300.

plural of dallier