| Subject | English | Welsh |
| comp., MS | Date Navigator | Llywiwr Dyddiadau (The small calendar that displays the current month in Calendar. It provides a quick and easy way to move appointments and to view other dates) |
| comp., MS | date range | ystod dyddiadau (The time span between the start and end dates) |
| comp., MS | date separator | gwahanydd data (A character that is used to separate the day, month, and year when date values are formatted. The characters are determined by system settings or by the Format function) |
| comp., MS | Date/Time | Dyddiad/Amser (A data type used to hold date and time information) |
| comp., MS | due date | erbyn (The date by which some task or action should be completed) |
| comp., MS | expiration date | dyddiad dod i ben (The date after which information or a resource is no longer valid) |
| comp., MS | finish date | dyddiad gorffen (The date that a project or task is scheduled to be completed. This date is based on the task's start date, duration, calendars, predecessor dates, task dependencies, and constraints) |
| comp., MS | start date | dyddiad dechrau (The date when a project or task is scheduled to begin) |
| comp., MS | status date | dyddiad statws (A date that you set [rather than the current date] for reporting the time, cost, or performance condition of a project) |