System command

time command

Display or set the system time; /t displays without prompting for a change.

Availability: Microsoft Learn command reference spanning Windows client and Windows Server releases; some entries are legacy, role-specific, optional-feature or interactive subcommands.中文

Documented syntax

time [/t | [<HH>[:<MM>[:<SS>]] [am|pm]]]

The linked Microsoft Learn article is the upstream authority. Availability may depend on Windows release, role, optional feature or interactive tool context.

Examples

Example usage for time.

time /t

Parameters, options and clauses

Option / clause	Description
`/t`	Display the current time without prompting to set it.
`<time>`	Set the system time; this changes system state and may require permission.
`<HH>[:<MM>[:<SS>[.<NN>]]] [am`	Microsoft documents this argument or subcommand; check the linked reference for its required format and context.
`<HH>`	Microsoft documents this argument or subcommand; check the linked reference for its required format and context.
`<MM>`	Microsoft documents this argument or subcommand; check the linked reference for its required format and context.
`<SS>`	Microsoft documents this argument or subcommand; check the linked reference for its required format and context.

Safety note

Review a command and its target before running it. Commands that alter files, services, accounts, disks, permissions or databases may be difficult to reverse. Test in a safe environment and keep backups.

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