2023-07-29 10:34:04 +02:00
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*check-moon-phase.ps1*
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================
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2021-12-09 16:19:09 +01:00
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2022-02-10 09:01:07 +01:00
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This PowerShell script determines the Moon phase and answers by text-to-speech (TTS).
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2021-12-09 16:19:09 +01:00
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2023-07-29 10:04:38 +02:00
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Parameters
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----------
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2021-12-09 16:19:09 +01:00
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```powershell
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2023-07-29 10:15:44 +02:00
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PS> ./check-moon-phase.ps1 [<CommonParameters>]
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2021-12-09 16:19:09 +01:00
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[<CommonParameters>]
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This script supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction,
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WarningVariable, OutBuffer, PipelineVariable, and OutVariable.
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```
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2023-07-29 10:04:38 +02:00
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Example
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-------
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2021-12-09 16:19:09 +01:00
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```powershell
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PS> ./check-moon-phase
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```
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2023-07-29 10:04:38 +02:00
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Notes
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-----
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2022-11-17 19:46:02 +01:00
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Author: Markus Fleschutz | License: CC0
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2021-12-09 16:19:09 +01:00
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2023-07-29 10:04:38 +02:00
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Related Links
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-------------
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2021-12-09 16:19:09 +01:00
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https://github.com/fleschutz/PowerShell
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2023-07-29 10:04:38 +02:00
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Script Content
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--------------
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2022-11-17 20:05:34 +01:00
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```powershell
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2022-11-17 20:02:26 +01:00
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<#
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.SYNOPSIS
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Checks the Moon phase
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.DESCRIPTION
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This PowerShell script determines the Moon phase and answers by text-to-speech (TTS).
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.EXAMPLE
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PS> ./check-moon-phase
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.LINK
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https://github.com/fleschutz/PowerShell
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.NOTES
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Author: Markus Fleschutz | License: CC0
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#>
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try {
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$LunarCycle = 29.53058868 # synodic period in days, time between successive new moons
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$LunarHalfCycle = $LunarCycle / 2.0
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$Phases = @("New moon", "Waxing crescent moon", "First quarter moon", "Waxing gibbous moon", "Full moon", "Waning gibbous moon", "Last quarter moon", "Waning crescent moon")
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$PhaseLength = $LunarCycle / 8.0
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$PhaseHalfLength = $PhaseLength / 2.0
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$RefDate = get-date -Year 2021 -Month 12 -Day 4 -Hour 6 -Minute 43 # Dec 4, 2021 06:43 UTC [New Moon]
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$Now = get-date
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$TimeInterval = New-TimeSpan -Start $RefDate -End $Now
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$Days = $TimeInterval.TotalDays
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$MDays = $Days % $LunarCycle
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$PhaseIndex = [int]($MDays * (8.0 / $LunarCycle))
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$Visibility = [math]::Round((($Days % $LunarHalfCycle) * 100) / $LunarHalfCycle)
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$Reply = "$($Phases[$PhaseIndex]) with $($Visibility)% visibility"
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$MoonAge = [math]::Round($Days % $LunarCycle)
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if ($MoonAge -eq "0") { $Reply += " today"
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} elseif ($MoonAge -eq "1") { $Reply += " since yesterday"
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} else { $Reply += ", last new moon was $MoonAge days ago"
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}
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2022-11-18 17:02:20 +01:00
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& "$PSScriptRoot/speak-english.ps1" "$Reply"
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2022-11-17 20:02:26 +01:00
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exit 0 # success
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} catch {
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"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
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exit 1
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}
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2022-11-17 20:05:34 +01:00
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```
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2022-11-17 20:02:26 +01:00
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2023-09-01 17:53:03 +02:00
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*(generated by convert-ps2md.ps1 using the comment-based help of check-moon-phase.ps1 as of 09/01/2023 17:51:48)*
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