# Composing a date or time column from one or more components

To create a date or time column from numeric components stored in other columns:

1. In the Summary view, choose Table > New Date Column (or New Time Column)
2. Use the controls to define the date or time components
3. Press OK

A time column defined in this way can optionally include date information stored in a separate date column.

The resulting column is computed on the fly; changing the value of a component column will update the date column appropriately.

See also:

- Editing a composed date or time column
- Extracting date or time components from a date or time column
- Computing the time elapsed between two date columns

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