What is the difference between hours and days?
Why do we see one day and one day ago? What is the difference between “yes” and “no”?
How many people want to go into financial safety?
There is no real difference that would be recognized and respected by all readers and translators and not only.
What are your views on separating the two? If it is 6 o’clock in the morning, then yesterday could refer to any time you went to bed for the night during the previous day, including for example 6 at night.
By different standards, said an hour ago would be more apt to refer to a time close to exactly 24 hours earlier, so 6 in the morning again.
This is different from today’s time.
