Seasons & Time
I currently play with all seasons set to 28 days, to allow for plenty of time in each season, although it frequently doesn’t feel like it’s enough! I’m searching for ways to extend the seasons but so far had no luck.
I switched ageing off at the beginning of this game and I age up everyone manually on their birthdays.
The exception to this rule is for the younger sims. Toddlers are aged up on their birthday until they’re due to start school (see Primary Education).
For school-aged toddlers, children and teenagers, they officially age up in the Autumn, just before they start school. Teenagers leaving secondary education age up in summer, just as school ends for the summer, after they turn 18. This is for starting Uni/work purposes.
A Young Adult ages to Adult on their 40th birthday.
An adult ages to Elder on the 60/65th birthday (undecided yet).