Free · See every light change

Twilight Times Calculator

List astronomical, nautical, civil, sunrise, sunset, and night times in order.

  • SunCalc 2 astronomy
  • Private in your browser
  • JSON and CSV downloads

Find twilight times

Use the sample place or enter coordinates. All times use the chosen time zone.

1
Choose place and timeCoordinates stay on this device
2
Read the sky planToronto · America/Toronto
Your local result will appear hereUse the sample place, then press the gold button.

Three simple steps

How to use it

  1. Choose the place and day.
  2. Read the light changes in order.
  3. Use the time-zone labels when planning.

Your place stays on this device

SunCalc does the sky math inside this browser tab. Bookify does not upload or save coordinates, dates, or times. Results assume a clear, level horizon; terrain, weather, and buildings can change what you see.