Set DateTime to Current
Each Swatch can be given a date/time value, to remind you of when it was created or modified, without having to look at the actual file-information. The date/time is stored in the 'DateTime' box. Values stored there are completely independent from the actual file-information. You can type your own values in there, or click the 'Swatches > Set DateTime to Current' menu-item, which sets the value to the current date and time, in a format that cannot be confused. Note that changing the contents of the 'DateTime' box will mark the Swatch as 'Altered', as indicated by the color of the 'Comment' label changing to red. You will then need to save the Swatch if you wish to retain the new date/time value.