Changing the /gamerule playerssleepingpercentage to 0 works in bedrock realms. However, as soon as there are no players in the realm, the value resets to the default value of 100. The next time any players are on the realm, it is required that everyone sleeps at the same time to skip the night.
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We're tracking this issue in REALMS-10030, so this ticket is being resolved and linked as a duplicate.
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