(PowerShell) Compute Difference Between Two DateTime Strings

Demonstrates how to compute the difference between two datetime strings.

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# Imagine we have these strings:

$t1 = "2022-11-14 15:45:38"
$t2 = "2022-11-16 17:23:41"

# How many minutes are between the two?

# First, we'd want load each date/time into a Chilkat CkDateTime object.
# In this case, there are no CkDateTime methods that accept the above format.
# However.. the CkDateTime's SetFromTimestamp will accept a date in the format "YYYY-MM-DDThh:mm:ssZ"

# First modify the above dates to the timestamp format.
$sb1 = New-Object Chilkat.StringBuilder
$sb1.Append($t1)
$count = $sb1.Replace(" ","T")
$sb1.Append("Z")

$sb2 = New-Object Chilkat.StringBuilder
$sb2.Append($t2)
$count = $sb2.Replace(" ","T")
$sb2.Append("Z")

# Load each into a CkDateTime
$dt1 = New-Object Chilkat.CkDateTime
$dt1.SetFromTimestamp($sb1.GetAsString())
# verify...
$($dt1.GetAsTimestamp($false))

$dt2 = New-Object Chilkat.CkDateTime
$dt2.SetFromTimestamp($sb2.GetAsString())
# verify...
$($dt2.GetAsTimestamp($false))

# Get the difference in seconds
$diffSeconds = $dt2.DiffSeconds($dt1)
$("Difference in seconds: " + $diffSeconds)
$("Difference in minutes: " + $diffSeconds / 60)