Jul 2
Consistently about two minutes later than the almanac, everywhere, all year. Small, but I plan around first light and two minutes is the difference between setting up and rushing.
TidelinemacOS
Tide times and surf forecasts in your menu bar.
Sunrise Two Minutes
2 Replies
Support TeamJul 2
A constant offset in every location is a much better clue than a variable one, so this should be quick to find.
Support TeamJul 21
You were right, and the cause was that we were calculating for the centre of the sun rather than its upper edge. Almanacs use the upper edge, plus a correction for the atmosphere bending the light near the horizon.
Both are in as of 2.1.2, and we now agree with the almanac to within a few seconds.