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Added C# demo for lunar eclipse.

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Alphebetized demo readme pages.
This commit is contained in:
Don Cross
2020-05-17 14:03:01 -04:00
parent d9e2ea5816
commit 83544bf57d
18 changed files with 368 additions and 62 deletions
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30
demo/c/README.md
View File

@@ -2,19 +2,6 @@
---
### [Moon Phase Calculator](moonphase.c)
This example shows how to determine the Moon's current phase,
and how to predict when the next few quarter phases will occur.
### [Body Positions](positions.c)
An example of how to calculate equatorial and horizontal coordinates for all of the major solar system bodies.
### [Rise/Set](riseset.c)
Shows how to calculate sunrise, sunset, moonrise, and moonset times.
### [Seasons](seasons.c)
Calculates the equinoxes and solstices for a given calendar year.
### [Culmination](culminate.c)
Finds when the Sun, Moon, and planets reach their highest position in the sky on a given date,
as seen by an observer at a specified location on the Earth.
@@ -27,6 +14,23 @@ This is a more advanced example. It shows how to use coordinate
transforms to find where the ecliptic intersects with an observer's
horizon at a given date and time.
### [Lunar Eclipse](lunar_eclipse.c)
Calculates details about the first 10 partial/total lunar eclipses
after the given date and time.
### [Moon Phase Calculator](moonphase.c)
This example shows how to determine the Moon's current phase,
and how to predict when the next few quarter phases will occur.
### [Positions](positions.c)
Calculates equatorial and horizontal coordinates of the Sun, Moon, and planets.
### [Rise/Set](riseset.c)
Shows how to calculate sunrise, sunset, moonrise, and moonset times.
### [Seasons](seasons.c)
Calculates the equinoxes and solstices for a given calendar year.
---
# [API Reference](../../source/c/)

30
demo/csharp/README.md
View File

@@ -2,19 +2,6 @@
---
### [Moon Phase Calculator](moonphase/moonphase.cs)
This example shows how to determine the Moon's current phase,
and how to predict when the next few quarter phases will occur.
### [Body Positions](positions/positions.cs)
An example of how to calculate equatorial and horizontal coordinates for all of the major solar system bodies.
### [Rise/Set](riseset/riseset.cs)
Shows how to calculate sunrise, sunset, moonrise, and moonset times.
### [Seasons](seasons/seasons.cs)
Calculates the equinoxes and solstices for a given calendar year.
### [Culmination](culminate/culminate.cs)
Finds when the Sun, Moon, and planets reach their highest position in the sky on a given date,
as seen by an observer at a specified location on the Earth.
@@ -27,6 +14,23 @@ This is a more advanced example. It shows how to use coordinate
transforms to find where the ecliptic intersects with an observer's
horizon at a given date and time.
### [Lunar Eclipse](lunar_eclipse/lunar_eclipse.js)
Calculates details about the first 10 partial/total lunar eclipses
after the given date and time.
### [Moon Phase Calculator](moonphase/moonphase.cs)
This example shows how to determine the Moon's current phase,
and how to predict when the next few quarter phases will occur.
### [Positions](positions/positions.cs)
Calculates equatorial and horizontal coordinates of the Sun, Moon, and planets.
### [Rise/Set](riseset/riseset.cs)
Shows how to calculate sunrise, sunset, moonrise, and moonset times.
### [Seasons](seasons/seasons.cs)
Calculates the equinoxes and solstices for a given calendar year.
---
# [API Reference](../../source/csharp/)

14
demo/csharp/demo.sln
View File

@@ -19,6 +19,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "demo_helper", "demo_helper\
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "astronomy", "..\..\source\csharp\astronomy.csproj", "{B5681C91-3FEF-4455-AAA9-15070BDDB9C9}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "lunar_eclipse", "lunar_eclipse\lunar_eclipse.csproj", "{F65EC67F-7BC8-48D8-8D74-B58747B6BA7A}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
@@ -128,5 +130,17 @@ Global
{B5681C91-3FEF-4455-AAA9-15070BDDB9C9}.Release|x64.Build.0 = Release|Any CPU
{B5681C91-3FEF-4455-AAA9-15070BDDB9C9}.Release|x86.ActiveCfg = Release|Any CPU
{B5681C91-3FEF-4455-AAA9-15070BDDB9C9}.Release|x86.Build.0 = Release|Any CPU
{F65EC67F-7BC8-48D8-8D74-B58747B6BA7A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{F65EC67F-7BC8-48D8-8D74-B58747B6BA7A}.Debug|Any CPU.Build.0 = Debug|Any CPU
{F65EC67F-7BC8-48D8-8D74-B58747B6BA7A}.Debug|x64.ActiveCfg = Debug|Any CPU
{F65EC67F-7BC8-48D8-8D74-B58747B6BA7A}.Debug|x64.Build.0 = Debug|Any CPU
{F65EC67F-7BC8-48D8-8D74-B58747B6BA7A}.Debug|x86.ActiveCfg = Debug|Any CPU
{F65EC67F-7BC8-48D8-8D74-B58747B6BA7A}.Debug|x86.Build.0 = Debug|Any CPU
{F65EC67F-7BC8-48D8-8D74-B58747B6BA7A}.Release|Any CPU.ActiveCfg = Release|Any CPU
{F65EC67F-7BC8-48D8-8D74-B58747B6BA7A}.Release|Any CPU.Build.0 = Release|Any CPU
{F65EC67F-7BC8-48D8-8D74-B58747B6BA7A}.Release|x64.ActiveCfg = Release|Any CPU
{F65EC67F-7BC8-48D8-8D74-B58747B6BA7A}.Release|x64.Build.0 = Release|Any CPU
{F65EC67F-7BC8-48D8-8D74-B58747B6BA7A}.Release|x86.ActiveCfg = Release|Any CPU
{F65EC67F-7BC8-48D8-8D74-B58747B6BA7A}.Release|x86.Build.0 = Release|Any CPU
EndGlobalSection
EndGlobal

73
demo/csharp/lunar_eclipse/lunar_eclipse.cs Normal file
View File

@@ -0,0 +1,73 @@
using System;
using demo_helper;
using CosineKitty;
namespace lunar_eclipse
{
class Program
{
static int Main(string[] args)
{
AstroTime time;
switch (args.Length)
{
case 0:
time = new AstroTime(DateTime.Now);
break;
case 1:
time = DemoHelper.ParseTime("lunar_eclipse", args[0]);
break;
default:
Console.WriteLine("USAGE: lunar_eclipse [date]");
return 1;
}
int count = 0;
LunarEclipseInfo eclipse = Astronomy.SearchLunarEclipse(time);
for(;;)
{
if (eclipse.kind != EclipseKind.Penumbral)
{
PrintEclipse(eclipse);
if (++count == 10)
break;
}
eclipse = Astronomy.NextLunarEclipse(eclipse.center);
}
return 0;
}
static void PrintEclipse(LunarEclipseInfo eclipse)
{
// Calculate beginning/ending of different phases
// of an eclipse by subtracting/adding the center time
// with the number of minutes indicated by the "semi-duration"
// fields sd_partial and sd_total.
const double MINUTES_PER_DAY = 24 * 60;
AstroTime p1 = eclipse.center.AddDays(-eclipse.sd_partial / MINUTES_PER_DAY);
Console.WriteLine("{0} Partial eclipse begins.", p1);
if (eclipse.sd_total > 0.0)
{
AstroTime t1 = eclipse.center.AddDays(-eclipse.sd_total / MINUTES_PER_DAY);
Console.WriteLine("{0} Total eclipse begins.", t1);
}
Console.WriteLine("{0} Peak of {1} eclipse.", eclipse.center, eclipse.kind.ToString().ToLowerInvariant());
if (eclipse.sd_total > 0.0)
{
AstroTime t2 = eclipse.center.AddDays(+eclipse.sd_total / MINUTES_PER_DAY);
Console.WriteLine("{0} Total eclipse ends.", t2);
}
AstroTime p2 = eclipse.center.AddDays(+eclipse.sd_partial / MINUTES_PER_DAY);
Console.WriteLine("{0} Partial eclipse ends.", p2);
Console.WriteLine();
}
}
}

14
demo/csharp/lunar_eclipse/lunar_eclipse.csproj Normal file
View File

@@ -0,0 +1,14 @@
<Project Sdk="Microsoft.NET.Sdk">
<ItemGroup>
<ProjectReference Include="..\..\..\source\csharp\astronomy.csproj" />
<ProjectReference Include="..\demo_helper\demo_helper.csproj" />
</ItemGroup>
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>netcoreapp2.2</TargetFramework>
<TreatWarningsAsErrors>true</TreatWarningsAsErrors>
</PropertyGroup>
</Project>

1
demo/csharp/test/.gitignore vendored
View File

@@ -4,3 +4,4 @@ riseset.txt
seasons.txt
culminate.txt
horizon.txt
lunar_eclipse.txt

50
demo/csharp/test/lunar_eclipse_correct.txt Normal file
View File

@@ -0,0 +1,50 @@
1988-03-03T16:04:42.484Z Partial eclipse begins.
1988-03-03T16:13:29.227Z Peak of partial eclipse.
1988-03-03T16:22:15.970Z Partial eclipse ends.
1988-08-27T10:07:57.338Z Partial eclipse begins.
1988-08-27T11:05:04.753Z Peak of partial eclipse.
1988-08-27T12:02:12.168Z Partial eclipse ends.
1989-02-20T13:44:07.827Z Partial eclipse begins.
1989-02-20T14:56:15.430Z Total eclipse begins.
1989-02-20T15:36:04.478Z Peak of total eclipse.
1989-02-20T16:15:53.526Z Total eclipse ends.
1989-02-20T17:28:01.129Z Partial eclipse ends.
1989-08-17T01:21:19.201Z Partial eclipse begins.
1989-08-17T02:20:31.653Z Total eclipse begins.
1989-08-17T03:08:46.679Z Peak of total eclipse.
1989-08-17T03:57:01.705Z Total eclipse ends.
1989-08-17T04:56:14.157Z Partial eclipse ends.
1990-02-09T17:29:19.371Z Partial eclipse begins.
1990-02-09T18:50:02.143Z Total eclipse begins.
1990-02-09T19:11:46.639Z Peak of total eclipse.
1990-02-09T19:33:31.135Z Total eclipse ends.
1990-02-09T20:54:13.906Z Partial eclipse ends.
1990-08-06T12:44:54.290Z Partial eclipse begins.
1990-08-06T14:13:00.287Z Peak of partial eclipse.
1990-08-06T15:41:06.284Z Partial eclipse ends.
1991-12-21T10:00:27.419Z Partial eclipse begins.
1991-12-21T10:33:39.370Z Peak of partial eclipse.
1991-12-21T11:06:51.320Z Partial eclipse ends.
1992-06-15T03:27:15.071Z Partial eclipse begins.
1992-06-15T04:57:38.272Z Peak of partial eclipse.
1992-06-15T06:28:01.474Z Partial eclipse ends.
1992-12-09T21:59:59.280Z Partial eclipse begins.
1992-12-09T23:07:16.402Z Total eclipse begins.
1992-12-09T23:44:42.637Z Peak of total eclipse.
1992-12-10T00:22:08.873Z Total eclipse ends.
1992-12-10T01:29:25.994Z Partial eclipse ends.
1993-06-04T11:11:48.333Z Partial eclipse begins.
1993-06-04T12:12:49.449Z Total eclipse begins.
1993-06-04T13:01:01.725Z Peak of total eclipse.
1993-06-04T13:49:14.001Z Total eclipse ends.
1993-06-04T14:50:15.117Z Partial eclipse ends.

6
demo/csharp/test/test
View File

@@ -5,7 +5,7 @@ Fail()
exit 1
}
rm -rf exe
rm -f test/{moonphase,positions,riseset,seasons,culminate,horizon}.txt
rm -f test/{moonphase,positions,riseset,seasons,culminate,horizon,lunar_eclipse}.txt
dotnet build --output ${PWD}/exe || Fail "Error building ${PWD}/demo.sln"
echo "Testing example: moonphase.cs"
@@ -32,5 +32,9 @@ echo "Testing example: horizon.cs"
dotnet exe/horizon.dll +25.5 -85.3 2016-12-25T12:30:45Z > test/horizon.txt || Fail "Error testing horizon.cs"
diff test/horizon.txt test/horizon_correct.txt || Fail "Error comparing horizon.cs output."
echo "Testing example: lunar_eclipse.cs"
dotnet exe/lunar_eclipse.dll 1988-01-01T00:00:00Z > test/lunar_eclipse.txt || Fail "Error running lunar_eclipse.cs."
diff test/lunar_eclipse.txt test/lunar_eclipse_correct.txt || Fail "Error comparing lunar_eclipse.cs output."
echo "PASS: C# examples"
exit 0

34
demo/nodejs/README.md
View File

@@ -2,14 +2,14 @@
The source file
[`astronomy.js`](../../source/js/astronomy.js)
works as a Node.js module. Download the file into your project directory.
works as a Node.js module. Download the file into your project directory.
Then in your own source file, do this:
```javascript
const Astronomy = require('astronomy.js');
```
![Vanilla JS](../vanillajs.png) There are no external dependencies!
![Vanilla JS](../vanillajs.png) There are no external dependencies!
Astronomy Engine is completely self-contained, and it always will be.
(By the way, you can use the same file `astronomy.js` for
@@ -17,19 +17,6 @@ Astronomy Engine is completely self-contained, and it always will be.
---
### [Moon Phase Calculator](moonphase.js)
This example shows how to determine the Moon's current phase,
and how to predict when the next few quarter phases will occur.
### [Planet Positions](positions.js)
Calculates equatorial and horizontal coordinates of the Sun, Moon, and planets.
### [Rise/Set](riseset.js)
Shows how to calculate sunrise, sunset, moonrise, and moonset times.
### [Seasons](seasons.js)
Calculates the equinoxes and solstices for a given calendar year.
### [Culmination](culminate.js)
Finds when the Sun, Moon, and planets reach their highest position in the sky on a given date,
as seen by an observer at a specified location on the Earth.
@@ -42,6 +29,23 @@ This is a more advanced example. It shows how to use coordinate
transforms to find where the ecliptic intersects with an observer's
horizon at a given date and time.
### [Lunar Eclipse](lunar_eclipse.js)
Calculates details about the first 10 partial/total lunar eclipses
after the given date and time.
### [Moon Phase Calculator](moonphase.js)
This example shows how to determine the Moon's current phase,
and how to predict when the next few quarter phases will occur.
### [Positions](positions.js)
Calculates equatorial and horizontal coordinates of the Sun, Moon, and planets.
### [Rise/Set](riseset.js)
Shows how to calculate sunrise, sunset, moonrise, and moonset times.
### [Seasons](seasons.js)
Calculates the equinoxes and solstices for a given calendar year.
---
# [API Reference](../../source/js/)

6
demo/nodejs/culminate.js
View File

@@ -11,9 +11,9 @@
each body's "hour angle" is 0.
Having an hour angle of 0 is another way of saying that the body is
crossing the meridian, the imaginary semicircle in the sky that passes
from due north on the horizon, through the zenith (straight up),
toward due south on the horizon. At this moment the body appears to
crossing the meridian, the imaginary semicircle in the sky that passes
from due north on the horizon, through the zenith (straight up),
toward due south on the horizon. At this moment the body appears to
have an azimuth of either 180 degrees (due south) or 0 (due north).
To execute, run the command:

79
demo/nodejs/lunar_eclipse.js Normal file
View File

@@ -0,0 +1,79 @@
/*
lunar_eclipse.js - by Don Cross - 2020-05-17
Example Node.js program for Astronomy Engine:
https://github.com/cosinekitty/astronomy
Searches for the next 10 partial/total lunar eclipses after
the current date, or a date specified on the command line.
To execute, run the command:
node lunar_eclipse [date]
*/
const Astronomy = require('../../source/js/astronomy.js');
function Pad(s, w) {
s = s.toFixed(0);
while (s.length < w) {
s = '0' + s;
}
return s;
}
function FormatDate(t) {
const date = t.date;
var year = Pad(date.getUTCFullYear(), 4);
var month = Pad(1 + date.getUTCMonth(), 2);
var day = Pad(date.getUTCDate(), 2);
var hour = Pad(date.getUTCHours(), 2);
var minute = Pad(date.getUTCMinutes(), 2);
var svalue = date.getUTCSeconds() + (date.getUTCMilliseconds() / 1000);
var second = Pad(Math.round(svalue), 2);
return `${year}-${month}-${day} ${hour}:${minute}:${second} UTC`;
}
function PrintEclipse(e) {
// Calculate beginning/ending of different phases
// of an eclipse by subtracting/adding the center time
// with the number of minutes indicated by the "semi-duration"
// fields sd_partial and sd_total.
const MINUTES_PER_DAY = 24 * 60;
const p1 = e.center.AddDays(-e.sd_partial / MINUTES_PER_DAY);
console.log(`${FormatDate(p1)} - Partial eclipse begins.`);
if (e.sd_total > 0) {
const t1 = e.center.AddDays(-e.sd_total / MINUTES_PER_DAY);
console.log(`${FormatDate(t1)} - Total eclipse begins.`);
}
console.log(`${FormatDate(e.center)} - Peak of ${e.kind} eclipse.`);
if (e.sd_total > 0) {
const t2 = e.center.AddDays(+e.sd_total / MINUTES_PER_DAY);
console.log(`${FormatDate(t2)} - Total eclipse ends.`);
}
const p2 = e.center.AddDays(+e.sd_partial / MINUTES_PER_DAY);
console.log(`${FormatDate(p2)} - Partial eclipse ends.`);
console.log('');
}
function Demo() {
const date = (process.argv.length === 3) ? new Date(process.argv[2]) : new Date();
let count = 0;
let eclipse = Astronomy.SearchLunarEclipse(date);
for(;;) {
if (eclipse.kind !== 'penumbral') {
PrintEclipse(eclipse);
if (++count === 10) {
break;
}
}
eclipse = Astronomy.NextLunarEclipse(eclipse.center);
}
}
Demo();
process.exit(0);

4
demo/nodejs/moonphase.js
View File

@@ -36,14 +36,14 @@ function FormatDate(date) {
function Demo() {
const date = (process.argv.length === 3) ? new Date(process.argv[2]) : new Date();
// Calculate the Moon's current phase angle,
// Calculate the Moon's current phase angle,
// which ranges from 0 to 360 degrees.
// 0 degrees = new moon,
// 90 degrees = first quarter,
// 180 degrees = full moon,
// 270 degrees = third quarter.
const phase = Astronomy.MoonPhase(date);
console.log(`${FormatDate(date)} : Moon's phase angle = ${phase.toFixed(6)} degrees.`);
console.log(`${FormatDate(date)} : Moon's phase angle = ${phase.toFixed(6)} degrees.`);
console.log('');
// Now we predict when the next 10 lunar quarter phases will happen.

2
demo/nodejs/positions.js
View File

@@ -9,7 +9,7 @@
location on the Earth.
To execute, run the command:
node positions.js latitude longitude [date]
where

2
demo/nodejs/riseset.js
View File

@@ -32,7 +32,7 @@ function Demo() {
DisplayEvent('sunrise', sunrise);
DisplayEvent('sunset', sunset);
DisplayEvent('moonrise', moonrise);
DisplayEvent('moonset', moonset);
DisplayEvent('moonset', moonset);
process.exit(0);
} else {
console.log('USAGE: node riseset.js latitude longitude [date]');

1
demo/nodejs/test/.gitignore vendored
View File

@@ -4,3 +4,4 @@ riseset.txt
seasons.txt
culminate.txt
horizon.txt
lunar_eclipse.txt

50
demo/nodejs/test/lunar_eclipse_correct.txt Normal file
View File

@@ -0,0 +1,50 @@
1988-03-03 16:04:42 UTC - Partial eclipse begins.
1988-03-03 16:13:29 UTC - Peak of partial eclipse.
1988-03-03 16:22:16 UTC - Partial eclipse ends.
1988-08-27 10:07:57 UTC - Partial eclipse begins.
1988-08-27 11:05:05 UTC - Peak of partial eclipse.
1988-08-27 12:02:12 UTC - Partial eclipse ends.
1989-02-20 13:44:08 UTC - Partial eclipse begins.
1989-02-20 14:56:15 UTC - Total eclipse begins.
1989-02-20 15:36:04 UTC - Peak of total eclipse.
1989-02-20 16:15:54 UTC - Total eclipse ends.
1989-02-20 17:28:01 UTC - Partial eclipse ends.
1989-08-17 01:21:19 UTC - Partial eclipse begins.
1989-08-17 02:20:32 UTC - Total eclipse begins.
1989-08-17 03:08:47 UTC - Peak of total eclipse.
1989-08-17 03:57:02 UTC - Total eclipse ends.
1989-08-17 04:56:14 UTC - Partial eclipse ends.
1990-02-09 17:29:19 UTC - Partial eclipse begins.
1990-02-09 18:50:02 UTC - Total eclipse begins.
1990-02-09 19:11:47 UTC - Peak of total eclipse.
1990-02-09 19:33:31 UTC - Total eclipse ends.
1990-02-09 20:54:14 UTC - Partial eclipse ends.
1990-08-06 12:44:54 UTC - Partial eclipse begins.
1990-08-06 14:13:00 UTC - Peak of partial eclipse.
1990-08-06 15:41:06 UTC - Partial eclipse ends.
1991-12-21 10:00:27 UTC - Partial eclipse begins.
1991-12-21 10:33:39 UTC - Peak of partial eclipse.
1991-12-21 11:06:51 UTC - Partial eclipse ends.
1992-06-15 03:27:15 UTC - Partial eclipse begins.
1992-06-15 04:57:38 UTC - Peak of partial eclipse.
1992-06-15 06:28:01 UTC - Partial eclipse ends.
1992-12-09 21:59:59 UTC - Partial eclipse begins.
1992-12-09 23:07:16 UTC - Total eclipse begins.
1992-12-09 23:44:43 UTC - Peak of total eclipse.
1992-12-10 00:22:09 UTC - Total eclipse ends.
1992-12-10 01:29:26 UTC - Partial eclipse ends.
1993-06-04 11:11:48 UTC - Partial eclipse begins.
1993-06-04 12:12:49 UTC - Total eclipse begins.
1993-06-04 13:01:02 UTC - Peak of total eclipse.
1993-06-04 13:49:14 UTC - Total eclipse ends.
1993-06-04 14:50:15 UTC - Partial eclipse ends.

4
demo/nodejs/test/test
View File

@@ -29,5 +29,9 @@ echo "Testing example: horizon.js"
node horizon +25.5 -85.3 2016-12-25T12:30:45Z > test/horizon.txt || Fail "Error running horizon.js."
diff test/horizon.txt test/horizon_correct.txt || Fail "Error comparing horizon.js output."
echo "Testing example: lunar_eclipse.js"
node lunar_eclipse.js 1988-01-01 > test/lunar_eclipse.txt || Fail "Error running lunar_eclipse.js."
diff test/lunar_eclipse.txt test/lunar_eclipse_correct.txt || Fail "Error comparing lunar_eclipse.js output."
echo "PASS: nodejs examples"
exit 0

30
demo/python/README.md
View File

@@ -2,19 +2,6 @@
---
### [Moon Phase Calculator](moonphase.py)
This example shows how to determine the Moon's current phase,
and how to predict when the next few quarter phases will occur.
### [Body Positions](positions.py)
An example of how to calculate equatorial and horizontal coordinates for all of the major solar system bodies.
### [Rise/Set](riseset.py)
Shows how to calculate sunrise, sunset, moonrise, and moonset times.
### [Seasons](seasons.py)
Calculates the equinoxes and solstices for a given calendar year.
### [Culmination](culminate.py)
Finds when the Sun, Moon, and planets reach their highest position in the sky on a given date,
as seen by an observer at a specified location on the Earth.
@@ -27,6 +14,23 @@ This is a more advanced example. It shows how to use coordinate
transforms to find where the ecliptic intersects with an observer's
horizon at a given date and time.
### [Lunar Eclipse](lunar_eclipse.py)
Calculates details about the first 10 partial/total lunar eclipses
after the given date and time.
### [Moon Phase Calculator](moonphase.py)
This example shows how to determine the Moon's current phase,
and how to predict when the next few quarter phases will occur.
### [Positions](positions.py)
Calculates equatorial and horizontal coordinates of the Sun, Moon, and planets.
### [Rise/Set](riseset.py)
Shows how to calculate sunrise, sunset, moonrise, and moonset times.
### [Seasons](seasons.py)
Calculates the equinoxes and solstices for a given calendar year.
---
# [API Reference](../../source/python/)