Observed arrival · 2026-09-24
BestZman, the observer’s clock
A location- and date-based interface for exploring zmanim, sunrise and sunset, lunar data, and traditional calculation settings.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- People comparing zmanim across locations and traditions
- Worth noticing
- The page says sky calculations stay on-device, while address lookup and map imagery use OpenStreetMap.
Field notes
The controls expose observer height in meters, feet, or amot, alongside tefach-length choices and an open-horizon model. Map controls include a draggable pin and fine coordinate steps; the page cautions that those steps do not increase map accuracy. It also distinguishes angular relationships and traditional symbolism from prediction, and labels its stated ±1′ sensitivity as something other than total uncertainty.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
◎NicheUnusually specific use
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