Hacker ApprovedDepartments

Sun Position Calculator

Ranked 7 of 14 web apps by recommenders

Interactive tool that shows the Sun, Earth and seasons, praised for making the changing solar altitude easy to understand. One critic said the stars render incorrectly.

Interactive tool that shows the Sun, Earth and seasons, praised for making the changing solar altitude easy to understand. One critic said the stars render incorrectly.

11 people gave an opinion

recommend it
10
criticize it
1
approval share
91%
Each figure is one person. RecommendsCriticizes

Recommended in 1 of 13 months

  1. November 2025: not recommended
  2. December 2025: not recommended
  3. January 2026: recommended
  4. February 2026: not recommended
  5. March 2026: not recommended
  6. April 2026: not recommended
  7. May 2026: not recommended
  8. June 2026: not recommended
  9. July 2026: not recommended
  10. August 2026: not recommended
  11. September 2026: not recommended
  12. October 2026: not recommended
  13. November 2026: not recommended (month in progress)

Why it doesn’t carry the badge

  • 10 people recommend itNeeds 10 or more, met.
  • 10 recommenders for every criticNeeds 2 to 1 or better, met.
  • Recommended in 1 of 13 monthsNeeds 4 or more, not met.

The same three rules apply to every product, and the badge can’t be bought. How the badge works

What people say about it

The reasons people give, with the number of comments that give each one. Open a reason to read what they said.

Why people recommend it

Each mark is one comment

  • Clear visualization of seasons

    “This is probably the most clear explanation of the seasons and the changing altitude of the Sun that I have seen.”

    Comment from 15 Jan 2026 in “Sun Position Calculator”

    “Outstanding design and implementation! Really great for visualizing the sun, earth, and seasonal relationships!”

    Comment from 15 Jan 2026 in “Sun Position Calculator”
  • Attractive, polished interface

    “Outstanding design and implementation! Really great for visualizing the sun, earth, and seasonal relationships!”

    Comment from 15 Jan 2026 in “Sun Position Calculator”

    “the prettiest interface I've seen for explaining seasons”

    Comment from 15 Jan 2026 in “Sun Position Calculator”
  • Useful zoom and explanatory tools

    “I recommend activating "Show Illuminating Sun Beam" under "Explanatory tools"”

    Comment from 14 Jan 2026 in “Sun Position Calculator”

    “The neighborhood-level zoom is particularly useful.”

    Comment from 15 Jan 2026 in “Sun Position Calculator”
  • Many features, well implemented

    “Outstanding design and implementation! Really great for visualizing the sun, earth, and seasonal relationships!”

    Comment from 15 Jan 2026 in “Sun Position Calculator”

    “I’m very impressed by all the features implemented here”

    Comment from 15 Jan 2026 in “Sun Position Calculator”

Other web apps people recommend

The four most recommended other web apps, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.

Sun Position Calculator compared with 4 alternatives
ProductRecommendCriticizeApprovalMonthsOwnedBadge
Bigwords.page45394%1——
Jmail391080%8—Approved
Stowaway21484%2——
Scroll Wikipedia like TikTok18578%1——
Sun Position CalculatorThis page10191%1——
See all 14 web apps, ranked

What people said

8 of the 11 comments that mention it, newest first. Each links to the original comment.

“amazing work... is it possible to add moon to it as well”

RecommendsComment from 16 Jan 2026 in “Sun Position Calculator”

“Outstanding design and implementation! Really great for visualizing the sun, earth, and seasonal relationships!”

MixedComment from 15 Jan 2026 in “Sun Position Calculator”

“I’m very impressed by all the features implemented here”

RecommendsComment from 15 Jan 2026 in “Sun Position Calculator”

“This is probably the most clear explanation of the seasons and the changing altitude of the Sun that I have seen.”

RecommendsComment from 15 Jan 2026 in “Sun Position Calculator”

“the prettiest interface I've seen for explaining seasons”

RecommendsComment from 15 Jan 2026 in “Sun Position Calculator”

“the stars don't seem to be rendered correctly”

CriticizesComment from 15 Jan 2026 in “Sun Position Calculator”

“The neighborhood-level zoom is particularly useful.”

RecommendsComment from 15 Jan 2026 in “Sun Position Calculator”

“I recommend activating "Show Illuminating Sun Beam" under "Explanatory tools"”

RecommendsComment from 14 Jan 2026 in “Sun Position Calculator”

Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.