We can add more details to talk about time by using prepositions. Here are some examples:
Days or dates, use on
I go to the gym on Mondays.
Sally studies English on Fridays.
Ed will visit his grandparents on the weekend.
She will visit the doctor on June 15.
With start and finish points,
use from/to or between/and
I work from 9pm to 5pm.
I work between 9pm and 5pm.
The bugs come out between dawn and dusk.
The ski resort is open between September and May.
Only a finish point,
use until.
I work until 5pm.
I cannot leave until the teacher comes back.
I will keep eating until I am full.
To talk about how long,
use for.
I have been working for 7 hours.
I have been waiting for an hour to see the doctor.
We lined up for 3 hours to buy tickets for the concert.
To talk about what you did in between,
use during.
I went for a walk during my break.
During summer vacation I went swimming a lot.
I slept well during the flight.
p1English 