What does T-DAY stand for?
What does T-DAY mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: T-DAY.
Effective Day Coincident With Presidential Declaration of A National Emergency and Authorization of Partial Mobilization
What does T-DAY mean?
- Training Expansion Day; the effective day coincident with Presidential declaration of national emergency and authorization of partial mobilization (not more than 1,000,000 personnel exclusive of the 200,000 callup).