JulianDate.ps1

# Converts Gregorian Date to Julian date Coded by Wasif Hasan
# Syntax: JulianDate.ps1 YYYY MM DD [-C]
# -C refers to current date
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If ($args[0] -eq "-C") {
  $Y = (Get-Date).Year; $M = (Get-Date).Month; $D = (Get-Date).Day
} Else {
  $Y = $args[0]; $M = $args[1]; $D = $args[2]
}
$M1 = ($M-14)/12
$Y1 = $Y+4800
$JDate = 1461*($Y1+$M1)/4+367*($M-2-12*$M1)/12-(3*(($Y1+$M1+100)/100))/4+$D-32075
$JDate = [Math]::Truncate($JDate)
Write-Host "Given Date  :`t$($D)/$($M)/$($Y)"
Write-Host "Julian Date :`t$($JDate)"


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