Understanding system and non‑system date fields
Fields with dates can be divided into two different types: system date field and non-system date field.
A system date field is automatically set by the system. System dates always appear in the UI along with time and the time zone, for example, "Feb 12, 2026, 12:49:34 AM EST." In the Task View, you might see these dates in the Admin tab or Task tab with different labels like "Creation Date", "Last Modification Date", etc., in the Activity tab with the label "Date and time," and so on.
A non-system date field is set by users in the UI. Non-system dates appear in the UI in a format that doesn't include the time and time zone, for example, "12/02/2013." In the Task View, you might see these dates in the Task tab with different labels like "Hire Date" in an Employee object, "Due Date" in an Action Item object, and so on.