It should really show the date on old posts, instead of “July 12”, if it isn’t from the current year. Posts such as this Unable to shade polygon normals? can be confusing when it says July 12 and then you scroll down and it says 9 years later. I know it shows it when hovering over the date but I think its okay to assume when you see a date say “July 12” it probably means this year.
It does say the year on the right above the scroll tool though : \
The July ‘12 means July of 2012. Tapping the date also shows you the full date of when the post was made.