New-TimeSpan

New-TimeSpan
    [[-Start] <DateTime>]
    [[-End] <DateTime>]
    [<CommonParameters>]

New-TimeSpan
    [-Days <Int32>]
    [-Hours <Int32>]
    [-Minutes <Int32>]
    [-Seconds <Int32>]
    [-Milliseconds <Int32>]
    [<CommonParameters>]

The New-TimeSpan cmdlet creates a TimeSpan object that represents a time interval. You can use a TimeSpan object to add or subtract time from DateTime objects.

Without parameters, a New-TimeSpan command returns a TimeSpan object that represents a time interval of zero.

This command creates a TimeSpan object with a duration of 1 hour and 25 minutes and stores it in a variable named $TimeSpan. It displays a representation of the TimeSpan object.

$TimeSpan = New-TimeSpan -Hours 1 -Minutes 25
$TimeSpan

Days              : 0
Hours             : 1
Minutes           : 25
Seconds           : 0
Milliseconds      : 0
Ticks             : 51000000000
TotalDays         : 0.0590277777777778
TotalHours        : 1.41666666666667
TotalMinutes      : 85
TotalSeconds      : 5100
TotalMilliseconds : 5100000

This example creates a new TimeSpan object that represents the interval between the time that the command is run and January 1, 2010.

This command doesn't require the Start parameter, because the default value of the Start parameter is the current date and time.

New-TimeSpan -End (Get-Date -Year 2010 -Month 1 -Day 1)

$90days = New-TimeSpan -Days 90
(Get-Date) + $90days

These commands return the date that is 90 days after the current date.

This command tells you how long it has been since the about_Remote help file was last updated. You can use this command format on any file, or any other object that has a LastWriteTime property.

This command works because the Start parameter of New-TimeSpan has an alias of LastWriteTime. When you pipe an object that has a LastWriteTime property to New-TimeSpan, PowerShell uses the value of the LastWriteTime property as the value of the Start parameter.

Get-ChildItem $PSHOME\en-US\about_remote.help.txt | New-TimeSpan

Days              : 321
Hours             : 21
Minutes           : 59
Seconds           : 22
Milliseconds      : 312
Ticks             : 278135623127728
TotalDays         : 321.916230471907
TotalHours        : 7725.98953132578
TotalMinutes      : 463559.371879547
TotalSeconds      : 27813562.3127728
TotalMilliseconds : 27813562312.7728

This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutBuffer, -OutVariable, -PipelineVariable, -ProgressAction, -Verbose, -WarningAction, and -WarningVariable. For more information, see about_CommonParameters.

You can pipe a DateTime object representing the start time to this cmdlet.

This cmdlet returns an object representing the time span.