Generally Speaking, including a date on your shirts will just make them obsolete faster, so it’s best to avoid putting an event date on T-Shirts unless you have a specific reason to include one.
If you’ve ever tried to get rid of leftover T-Shirts after the event date on the shirt. You know what I’m talking about.
Nobody want’s to wear a shirt with last years date on it, but last years shirt without a date on it becomes a rare collectors item worn with pride, as if to say “I know my way around, stick with me!”
There are exceptions to every rule, for example,”Hawaii 09″ is brilliant, since each time someone comes to Hawaii they feel the need to get an updated shirt. But generally our ministries are not as glamorus and Hawaii.