How much older is Hermione Granger than she should be?
101950
How much older was Hermione after her third year at Hogwarts?
141468
How to calculate my age
108910
Age of the universe $ \equiv 1/H$?
14981
By the year 1582 vs in 1582
5053
"I think him to be about 50" or "I think he is about 50"?
148815
When and what cause Voldemort to look the way he does, vs how we've seen him as a teen?
62567
At what age should my baby be expected to support her own head?
81495
Does the universe have a different age to different observers?
23180
How old should you be when you begin Jedi training?
119397
How big is Hogwarts?
35736
Is there canon info on shelf life of various potions in Harry Potter?
93087
How far back in time could I travel and still be understood?
35881
Why does Hermione say she went looking for the troll?
144777
Determining a patients biological age?
102276
Limitations on the Conjurer's Minor Conjuration ability
65014
Why wouldn't Hermione (and other muggle borns) say Voldemort's name?
44966
"people aged from 15 to 24" vs "people ages from 15 to 24": which is grammatically correct?