 So here I want to show you a little bit about the Eclipse Calculator. Now this is our recent and future Eclipses page in Blackboard, which is where the tutorial will be. Now this is going to change because the link for the tutorial won't actually appear until I'm making the video, which I'm doing right now. But I have a link down here for the actual Eclipse Calculator. So you should have that link on your Blackboard as well, and you may want to follow along with me as we go through this. So when you click on that link, it opens up another page from NASA. And this is the JavaScript Solar Eclipse Explorer. Now the first section here, you have to put information about what city you want to view from Eclipses. And if we look at it, there's a lot of different cities here, but pretty much just the major cities, so we don't have Orangeburg, South Carolina in there. So in order to fill that in, I'm going to need specific information about the latitude, longitude, and altitude for Orangeburg. So how do I find that? Well, I can start by just filling in Orangeburg, South Carolina, but until I actually have the information, I can't put those in. So I can come over here and I can jump to Google Maps. So because I'm recording this video from South Carolina State University, it pops up over here. Now for this particular exercise, I actually want to find what it's going to be like from the stadium. So you'll notice when I click on Google Maps, there's a tiny little window down here. Now it may be a little bit hard to read from the video screen, but if you do this and you're following along, you'll see that there's actually some information down here at the bottom of the sheet, which gives you the latitude and longitude. And just reading that off, that's 33.498657 for our latitude. And the minus, which means west, 80.844740. So I'm just writing this down on a piece of paper, although I'll keep the screen up and you can keep it up so that you can actually figure out where you're going. Now these are what we call decimal degrees, so it's 33. so many degrees. But in our JavaScript, it wants the degrees, minutes, and seconds. So we're going to want to convert that. Now you could do this by hand, but we could also do, let's see, I'm going to put in coordinate converter. And that'll bring up some different options. And from past experience, I know this FCC one happens to be really good because it goes degrees, minutes, seconds to and from decimal degrees, which is exactly what we want to do. Now since we have decimal degrees, but we want degrees, minutes, and seconds, we'll use the second form down here. And now I'm just going to type in the numbers I had from my previous Google maps. 4740, so I'm reading this off of my paper where I had written it down. And then I can convert into degrees, minutes, seconds. So you notice I've got 33 degrees, 29 minutes, and we'll just say 55 seconds. We'll round that part off there. Over here, I've got minus 80, 50, and let's say 41 seconds. Now if I had clicked on a slightly different spot on campus, I might have slightly different seconds over here, but my degrees and minutes should be the same because those don't vary that much across the campus. So I can come over here now and for my latitude, I'm going to put in 33 degrees, 29 minutes, and 55 seconds. And we are indeed a northern latitude. And then rather than putting minus 80 here, I'm just going to put 80, and then I'll put 50, and then my 41, and the west is taking care of that minus sign. Now I also need the altitude. Now Google Maps does not tell me the altitude. So I'm going to have to look for something else. So I'm going to go over here and Google Altitude. Let's say make sure I spell this correctly, of Orangeburg, South Carolina. I've done this search before, so it pops up in my search history. And it tells me that the elevation is 243 feet. So I'm going to write that down on my sheet as well here. So that's in feet, I need that in meters. So I'm also going to open up a little convert feet to meters. And it's going to bring up, isn't all of these little internet tools wonderful. 243 feet, and that's going to tell me that that's about 74 meters. I'm not going to worry about the decimal part here too much. So I come back over to my calculator, this one over here. And I'm going to put in 74 meters. Now I could also put in my time zone information. For right now, I'm just going to leave that as the default, but we'll talk about what that does later. So I've got that information down here. Now in order to get my Eclipse predictions, I want to narrow down what century I care about. So all of the negatives here, those are BC or BCE, and I actually want AD. So for example, if I use the 2001 to 2100, that's this century. So when I click on that, it's now going to tell me solar eclipses that are visible from Orangeburg, South Carolina, assuming I have the correct latitude, longitude, and altitude. And it goes back here and we can look down this list and see there's been a few different partial eclipses. But here, August 21st, 2017, that's a total eclipse. Now again, from your video, you may not be able to read all the details, which is why I'm encouraging you to follow along and actually type this into the eclipse calculator for yourself so that you can see the details. Now here, it actually goes through, it tells us when the partial eclipse begins, when totality begins, when we have the maximum eclipse, when totality ends, when the partial eclipse ends. And then it tells us the eclipse obs, that tells me how much of the surface of the sun is covered up. In totality, it's going to be one, but in partial, it'll be somewhat less than this. So we've actually had a few partial eclipses so far this century, but none of them were very large and we pretty much didn't notice anything was happening. So you'll use this information here to tell you a little bit about the current total solar eclipse. But you can also scroll down through the list to find the next total solar eclipse. And there's only one more this century, and you're going to have some questions in your quiz about the second one. You can also use the same information without changing everything at the top and go into last century and find out that there was a total solar eclipse that went over Orangeburg during the last century as well. And you'll answer some quiz questions about that. So this is your basic tutorial on using the eclipse calculator. Notice that you can follow the same procedure to put in any other town and find out what eclipses it may or may not have seen.