Site Recommendations

Last modified February 16, 2025.

Astronomy

  • Daff Moon Phase is an Android app that I used to spot all five naked-eye planets (Mercury, Venus, Mars, Jupiter, and Saturn) in 2020.
  • Sunrise and Sunset Calculator not only calculates sunrise and sunset times, but also calculates civil twilight, nautical twilight, astronomical twilight, and solar noon times as well!

Natural Languages

  • Pleco is an amazing Chinese dictionary app that I recommend to anyone learning Mandarin.

Rubik’s Cubes and Geometry


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