WMI (Windows Management Instrumentation, Get-WmiObject) uses a specific (DTMF) format for date and time. You can easily convert regular date and time information into this format:
PS> $date = Get-Date PS> $wmidate = [System.Management.ManagementDateTimeConverter]::ToDmtfDateTime($date) PS> $wmidate 20121231100600.751338+060 PS> $date = Get-Date PS> $wmidate = [System.Management.ManagementDateTimeConverter]::ToDmtfDateTime($date) PS> $wmidate 20121231100600.751338+060
Likewise, you can convert WMI date and time information back to a regular date and time object. This code tells you when your system was rebooted the last time:
PS> $os = Get-WmiObject -Class Win32_OperatingSystem PS> $os.LastBootUpTime 20121230214154.411427+060 PS> [System.Management.ManagementDateTimeConverter]::ToDateTime($os.LastBootupTime) Sunday, December 30, 2012 21:41:54
