Windows Timestamp Converter Online and in PowerShell – Integer8

The Windows Time Stamp Format - aka Integer8

Microsoft Windows environments use the Integer8 timestamp format. A 64-bit value representing the number of 100-nanoseconds elapsed since January 1, 1601 (UTC).

Conversion with PowerShell

PS C:\> Get-ADUser Alice -Properties * | fl lastLogon
lastLogon : 132463843855875757

# Convert to Local time
PS C:\> [datetime]::FromFileTime("132463843855875757")
05 October 2020 16:13:05

# Convert to UTC time
PS C:\> [datetime]::FromFileTimeUTC("132463843855875757")
05 October 2020 15:13:05