Well, it has already sprung, I guess, but still, there she is. It is now springtime, and I am much relieved to have shaken off winter. Not as much as you folks up in the white north, most likely, but relieved enough. Maybe I am destined to die in wintertime, because I feel it weakening me every year. Maybe it is the connection with my jungle ancestors (oh wait, they don't know wintertime in the jungle) or with my acer macrophyllum relatives. (who knows what that means, without having to look it up, besides my brother?) But that is over now. Soon it will be summer. I am really interested in watching the sun rise higher and higher each day, arcing overhead with the joy of a pollo. Oh, not a chicken! I mean Apollo! Does chicken (pollo) and Apollo have anything to do with each other?
So I am watching the sun and waiting for the light to come from overhead. Since I am at 20 degrees 45 minutes, that shouldn't be long. Here is a quiz. If the sun works in a sinusoidal curve from equator to tropic to equator to other tropic, based on the revolution around the sun (which we would assume is circular, but really it isn't) then what day does the sun reside directly over 20.75 degrees north lattitude?
You should note that the sun is directly over the equator on the equinoxes.
Except that all of that is not really true. It would be nice if it was, and that is what I base the quiz on, but the truth is more complicated, like leapyears and such. The earth doesn't go around in a circle, so the sun spends more time over the northern part of the sine curve than the southern (hence the colder south pole) (well, the fact that land is on the south pole also has something to do with that) So if you want to be exact, you need the almanac. But that's just the way it is. Part of the trick with Celestial navigation. But you can do all right with the navigation with a sine curve.
Ok, back to business. Hawaii is about the same lattitude (just a little south), so if I leave April 30, and get in before June 1, will I see the sun directly over my head during the passage?
I don't think it will be that impressive, but I've never seen a directly overhead sun. The closest I've come was probably in Vietnam last June, when I was about 10 degrees north, and the sun was still to the north of me.
Or in Costa Rica in March a few years ago, I was at 8 degrees, and the sun was at 0. Close, but not perfect.
So I am happy with the returnation of the sun to the northern lands (sorry for you folks down under).