Another reason to consider not placing a date:
You are going to be breaking EVERYONE’S context window cache at midnight UTC.
Why that sudden surge in computation late afternoon SFO time? Because you did it to yourselves.
Instead, an example of a cache-friendly time, whether it is the developer’s choice: only have a latest injection or add these developer messages to the conversation - for this kind of understanding:
This of course would be fighting a higher-priority “system” date at token 15.
Awaiting either the good news of recognition of this poor decision, or "sorry, we used that distracting non-performative pattern as a fine-tuning trigger to make a distinct “API behavior model”..