Get in touch

The fastest way to reach us is email: Vantoron@gmail.com.

What to write about

• A number that looks wrong. Tell us the city, date and value — every time on this site traces back to our engine, and we can re-derive any of them. If we made a mistake we’ll publish the correction on the method page.
• City requests. Our tables currently cover Hong Kong, Taipei, Tokyo, Singapore, London, New York, Los Angeles and Sydney. Ask for yours and it may head the next batch.
• Method questions. Formula sourcing, DST handling, validation — happy to explain any of it.
• Corrections to guides. If a guide states something a working photographer knows is off, we want to hear it.

Response time

This is a small, independently run site; we usually answer within a few days. Corrections affecting computed times jump the queue.

Press / licensing

Our engine (assets/js/solar.js) reuses the NOAA public-domain formulas; our implementation and all original prose are © SunAngle. Ask before republishing tables in bulk — the answer is usually yes with attribution.