For Canon articles:
For Legends articles:
For non-canon (both continuities) articles:
Note: do not use the template on articles for those "BBY"/"ABY" years of the Galactic standard calendar (Galactic Standard Calendar in the Star Wars Legends continuity) that are not explicitly mentioned in the "X BBY" or "X ABY" form in any sources. For example, 3743 BBY is not explicitly identified in Star Wars: The Old Republic, but it should nevertheless not use this template.