Student or Learner
I know that there are rules for omission of prepositions of time before "next, last, this" etc, are there any other circumstances that prepositions of time and location are omitted? I have noticed that prepositions are omitted sometimes before dates, for instance, I found both usages on the Internet as shown below. Are they both correct?
The deadline is 1 Jan.
The deadline is on 1 Jan.
There are 2 sentences in particular that I would like to seek your help. Which sentence is correct?
1. The venue is Ballroom 1 of H Hotel./ The venue is in Ballroom 1 of H Hotel.
2. The time is 6pm./ The time is at 6pm.
Thanks a lot!
1 I would not use a preposition, because the whole room is the venue.
2 I would not use a preposition because it is the time. I would say the meeting is at 6pm, not
the time is at 6pm.