diff --git a/types/suncalc/index.d.ts b/types/suncalc/index.d.ts
new file mode 100644
index 0000000000..5c9b0bf67e
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+++ b/types/suncalc/index.d.ts
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+// Type definitions for suncalc 1.8
+// Project: https://github.com/mourner/suncalc
+// Definitions by: horiuchi <https://github.com/horiuchi>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export interface GetTimesResult {
+    dawn: Date;
+    dusk: Date;
+    goldenHour: Date;
+    goldenHourEnd: Date;
+    nadir: Date;
+    nauticalDawn: Date;
+    nauticalDusk: Date;
+    night: Date;
+    nightEnd: Date;
+    solarNoon: Date;
+    sunrise: Date;
+    sunriseEnd: Date;
+    sunset: Date;
+    sunsetStart: Date;
+}
+export interface GetSunPositionResult {
+    altitude: number;
+    azimuth: number;
+}
+export interface GetMoonPositionResult {
+    altitude: number;
+    azimuth: number;
+    distance: number;
+    parallacticAngle: number;
+}
+export interface GetMoonIlluminationResult {
+    fraction: number;
+    phase: number;
+    angle: number;
+}
+export interface GetMoonTimes {
+    rise: Date;
+    set: Date;
+    alwaysUp: boolean;
+    alwaysDown: boolean;
+}
+
+export function getTimes(date: Date, latitude: number, longitude: number): GetTimesResult;
+export function addTime(angleInDegrees: number, morningName: string, eveningName: string): void;
+export function getPosition(timeAndDate: Date, latitude: number, longitude: number): GetSunPositionResult;
+export function getMoonPosition(timeAndDate: Date, latitude: number, longitude: number): GetMoonPositionResult;
+export function getMoonIllumination(timeAndDate: Date): GetMoonIlluminationResult;
+export function getMoonTimes(date: Date, latitude: number, longitude: number, inUTC?: boolean): GetMoonTimes;
diff --git a/types/suncalc/suncalc-tests.ts b/types/suncalc/suncalc-tests.ts
new file mode 100644
index 0000000000..0bc8772d04
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+++ b/types/suncalc/suncalc-tests.ts
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+import * as SunCalc from 'suncalc';
+
+let d: Date;
+let x: number;
+let b: boolean;
+
+const date = new Date();
+const latitude = 0.0;
+const longitude = 0.0;
+
+const times = SunCalc.getTimes(date, latitude, longitude);
+d = times.dawn;
+d = times.dusk;
+d = times.goldenHour;
+d = times.goldenHourEnd;
+d = times.nadir;
+d = times.nauticalDawn;
+d = times.nauticalDusk;
+d = times.night;
+d = times.nightEnd;
+d = times.solarNoon;
+d = times.sunrise;
+d = times.sunriseEnd;
+d = times.sunset;
+d = times.sunsetStart;
+
+SunCalc.addTime(0.0, 'customTime', 'customTimeEnd');
+
+const pos = SunCalc.getPosition(date, latitude, longitude);
+x = pos.altitude;
+x = pos.azimuth;
+
+const mp = SunCalc.getMoonPosition(date, latitude, longitude);
+x = mp.altitude;
+x = mp.azimuth;
+x = mp.distance;
+x = mp.parallacticAngle;
+
+const mi = SunCalc.getMoonIllumination(date);
+x = mi.fraction;
+x = mi.phase;
+x = mi.angle;
+
+const mt = SunCalc.getMoonTimes(date, latitude, longitude, true);
+d = mt.rise;
+d = mt.set;
+b = mt.alwaysUp;
+b = mt.alwaysDown;
diff --git a/types/suncalc/tsconfig.json b/types/suncalc/tsconfig.json
new file mode 100644
index 0000000000..ce875cd1d7
--- /dev/null
+++ b/types/suncalc/tsconfig.json
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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "suncalc-tests.ts"
+    ]
+}
diff --git a/types/suncalc/tslint.json b/types/suncalc/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/suncalc/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }