Groundhog Day API vs Sunrise-Sunset
Same instrument, two spec sheets — measured, not claimed.
Groundhog Day API vs Sunrise-Sunset: common questions
Which is more reliable, Groundhog Day API or Sunrise-Sunset?
On our scheduled checks, Groundhog Day API leads on measured uptime — Groundhog Day API at 100% versus Sunrise-Sunset at 99.02% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, Groundhog Day API or Sunrise-Sunset?
Sunrise-Sunset has the lower median latency in our checks — Groundhog Day API responds in 262 ms versus Sunrise-Sunset at 204 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do Groundhog Day API and Sunrise-Sunset need an API key?
Neither needs a paid key — Groundhog Day API is callable with no signup, and Sunrise-Sunset is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Groundhog Day API and Sunrise-Sunset from the browser?
Yes — both Groundhog Day API and Sunrise-Sunset send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are Groundhog Day API and Sunrise-Sunset free for commercial use?
Groundhog Day API has unclear commercial terms, and Sunrise-Sunset has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.