DarkMatters is not just your average Moon phase displaying program, it is designed mainly to provide you with information about how much darkness you have within the day. DarkMatters unique ability to show charts of how the length of dark period change over the month makes it especially useful for planning not only stargazing trips and star parties, but it will also help those planning fishing and hunting trips!

Features and Information:
- Basic moon rise/set information.
- Basic Sun rise/set/twilight information.
- Moon phase and phase angle.
- Dark period length (number of minutes of darkness during the day).
- A chart of dark period length over 10 days.
- A chart of dark period length over a month.
- Jump from month to month, every 10 days, and from day to day.
- Ability to select your twilight for maximum control.

Features coming soon:
- Ability to customize moon angle and time offset for calculations.