Made at the request of one of my viewers, here is a command block system that lets you set a percentage of players on a server. When more than that percentage of everyone is in bed, time gets set to daytime.

To use it, download the schematic file or paste the one command into a command block. Then hit the start button. You then need to set the percentage you want with this command:

/scoreboard players set Percentage Sleep <YourNumberHere>

so for instance "/scoreboard players set Percentage Sleep 50" will make 50% of the server have to sleep for the night to be skipped.

When a player gets in bed, a friendly message is displayed in the chat telling players how many more are needed for the night to be skipped.