Day pass
From FOnline: 2238 Wiki
This slightly crumpled piece of paper grants you access to all areas of Vault City, except the Vault itself, during daylight hours only.
Weight: 45 grams.
Usage
With the Day pass you can enter part of Vault City called Inner City without being a citizen. But only during the day (8:00-21:00). You will not be allowed to enter Vault 8 itself, that area is for citizens only.
Obtaining
Talk to Wallace in the Customers Office in the Courtyard. He will offer you a Day pass for 500 caps