They fill a Dr.'s day

• Some PDA entries
• Palm dates: Abbr
• Calendar data: Abbr.
• Dates with dentists, e.g. (abbr.)
• Planner notations: Abbr
• Datebook contents (abbr.)
• Liability for a political candidate ... as depicted four times in this puzzle?
• Day-Timer entries: abbr

Wiktionary Word definitions in Wiktionary
n. (plural of appt English)