Definition: Oh my god, you've got me at a loss! I'm not sure how to explain this. What is "03 29"? Is that a date? Or a time slot for something important? Maybe there's something more sinister going on, but I don't know what it is yet.
But seriously, "03 29" is a term used in some parts of the world to mean anything between two numbers or days. It could be something like "15-30" or "28-29." Sometimes it's just a number without any context, and you might not even know what it means. Now, let me give you an example sentence using this slang: "I don't understand why they chose 03 29 instead of 01 29 for their next big project. It could be that the company is trying to stay ahead with its competitors."