At least a dozen races each year will not finish before midnight
The Monaco Grand Prix will be cut from four days to three, under proposals that have been recommended to Formula 1’s owners.
The race in Monte Carlo, one of the sport’s longest, will now run from 16:00-2200 local time on Saturday, Sunday and Monday.
In order to shorten the race, motor racing’s governing body FIA said Monaco must also revert to the original race weekend.
The race will now be held on a Saturday, Sunday and Monday for two consecutive years in a row.
F1 boss Chase Carey has said that all races were looking at making changes to ensure it stays in the top 10 with countries such as Abu Dhabi, Australia and China.
Monaco’s next race will be held on 1 March 2022, and the 2021 season starts on 10 March.
Media playback is not supported on this device Boullier, Piquet and Rossi on Monaco… ‘At least it’s not at the BBC’
As things stand, Formula 1 races reach a conclusion only on Sunday, though the date of the season starts the following Saturday.
In addition to the move to a three-day format, the Spa-Francorchamps circuit in Belgium, held in July, will now run only on two days a week.
In Rome, the street circuit on the outskirts of Rome, will run three days over the weekend of 1, 3 and 7 June, 2021.
The latter race, an Italian Grand Prix, is being held annually on a Saturday, while running only for four days on Saturdays and Sundays previously.
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When Piquet was banned from the sport
In addition to Monaco’s cuts, its notorious track and its late finish will be cut, according to early estimates from drivers.
Rome’s Friday and Saturday sessions are due to be a maximum of 45 minutes long, as opposed to the previous 50 minute period, though races will be run between 3pm and 6pm.
As for Monaco, drivers have been told they can make their best possible race in the two-day format.
Meanwhile, the deadline for applications to join the FIA World Endurance Championship (WEC) has been set for 5 December.
The organisation has set some other requirements for entrants, such as additional legal counsel, than WEC has required previously, and there will be a technical committee representing the different countries.
Applicants must have owned a car during the last two seasons and be able to bid for multiple seasons within the WEC.
Women will be able to get the chance to compete in World Endurance Championship (WEC) next year