| At a point in time |
| In a length of time |
"When shall we meet?" | "Let's meet at 12:30." | "It's 12:45, when will you be ready?" | "I'll see you in an hour, at about 1:45." |
We use "when" to ask about time.
at | ||
"We open at ... | nine o'clock. |
at | ||
"We close at ... | six o'clock. |
from | to | ||||
"We're open from... | nine in the morning | to | six in the evening." | ||
"But, we're closed from... | 12 noon | to | one in the afternoon, for lunch." |
before | after | ||||
The staff arrive before ... | half past eight in the morning. | We don't allow any customers in after ... | half past five in the evening. |
morning | 00:01 - 11:59 |
a.m. - stands for Ante Meridiem (the time between midnight and noon) | 00:01 hrs - 12:00 |
noon or midday | 12:00 |
p.m. - stands for Post Meridian (after noon) | 12:01 - 24:00 hrs |
afternoon | 12:01 - 18:00 |
evening | 18:01 - 22:00 |
night | 22:01 - 24:00 |
midnight | 24:00 |
"I go to work in the morning." | |||||
"I go home in the evening." | |||||
"I have lunch in the afternoon." | |||||
"I woke up in the night." | |||||
but | "I go to sleep at night." |
I never work at the weekend.