I'm no grammarian, but my instinct here is to use "at". I think "at" works better with something that is an event, something that is scheduled to happen on a certain day. If we were talking about a period of time, "in" would work, but so would "at": "Experts predict the economy will take a downturn in the beginning of 2021." (I typed that example using "in" and this bothersome grammar bot flagged "in" and recommended "at"! Curses. I stand by my instinct. ) We always use "in" and never "at" when talking about a season: "I will be taking an economics class in the spring." Or when referring to a month: "The winds will return in September." In English, the phrase "in the beginning" has a powerful resonance, because it is the opening phrase of the King James translation of the Bible. For that reason, I think we are sometimes drawn to that wording, especially if we want to lend some gravitas to the subject: "In the beginning, the company was a struggling start-up working from Steve's garage in Silicon Valley."

The award ceremony will be held at the beginning of 2021. awarding --> award "In the beginning" and "at the beginning" simply mean different things So, for events at a specific time or place, years, as in your sentencee "at the beginning of 2021", "at the beginning of the ceremony", "at the beginning of your sentence". . "in the beginning" means before other things. It tends to be used to introduce a period rather than an event. In the beginning, before enlightnement, there was a general lack of clarity. It therefore tends to be used in relating things that took time, series of events over time.

Hi Debora! It’s a good question, and one not everybody agrees on! The good news is that “At the beginning” is definitely correct here: it is the correct form to use to refer to a specific start time. In my experience, “in the beginning” is mainly used in storytelling. Hope that helps!

At the begining. And it should be "The award ceremony..."