Works on new heists, but they don't have specific settings
Time of Day is a mod which gradually advances the time inside the heist as the heist goes on. For example, you may go into the safehouse and it will be night-time, after about 20 minutes it will be day-time.
Todo List
Fix it raining or snowing indoors
Allow you to override the day and night scenes that it starts and finishes on
Add the remaining heist specific settings