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Sol: Daylight Clock

By Alexander Valys

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12/30/2009: As a result of recent database problems, I migrated to a new provider over Christmas. This produced some intermittent connectivity issues, which should be resolved at this point. Contact me at the address below if you continue to have issues.

12/17/2009: The short version - the city database has been restored, and Sol is now fully functional again. To everyone who's bought Sol over the past month or two, I sincerely apologize for the trouble. If you re-download the application, hopefully it will meet your original expectations. My email address is: If you have any questions, issues, suggestions or complaints , contact me there.

The long version - Sol has a lot of poor reviews at the moment - apparently, about a month ago, the server that hosts the support website and the 250MB+ location of city names went down, and my hosting provider didn't tell me. This meant that most attempts to add a new city would fail - and all attempts to contact me for support would fail as well. Since I got no emails informing me of this problem (not even from Apple), and I've long since added all the cities I care about to my copy of Sol, I was blissfully unaware of this until I thought to check the latest reviews this evening...and was greeted by a sea of justified complaints.

Again, I sincerely apologize, and I've taken steps to ensure this won't happen again.


Sol is a 24-hour daylight clock. For any location on the planet, Sol displays how many hours of each day are spent in sunlight, how many are spent at nighttime, and how many are spent in twilight. Whether you're a backpacker who wants to know how long you have to get to your car before it gets dark, an astronomer who needs to know how many hours you can spend making observations before dawn, a private pilot who needs to land your plane before civil twilight, or just someone who wants to know how much daylight will be left when you get home from work, Sol does what you need.

Sol can calculate sunrise, sunset, and civil, nautical, and astronomical twilight for anywhere on Earth. And with a database of over 2.3 million locations, you'll never need to look up your latitude and longitude.

What's New in Version 1.0.1

1) The server that stores the 250MB+ location of city names has been restored. I'm terribly sorry folks, I never got any notification that it went down.

iPhone Screenshot

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Customer Reviews

Great and..

Great app, the individual who said that this developer should reeducated, is ridiculous! This is a great app, worth at least $1.99, yet it's .99, so chill folks.

The lack of an automatic location finder isn't even a big deal-- are you serious typing in your city name, and state and pressing search, which takes under 30 seconds to do-- is too much? C'mon how lazy can we get with a ..99 cent app? I hear your point, but it's not a big deal.

The update made the "i" button much slower and less sensitive-- I guess that might be good for some people--not me. But as long as the location entry opens in a reasonably good time, you will keep me satasfied.

It would be great to add a lunar tab, for displaying the current phase of the moo ...and for a little more money as well, a small temperature reading... Am I starting to get lazy too? Not sure, but I love apps that are combinations of different utilities..

Thanks for a wonderful app, next update make my "i" button easier to press... When I first downloaded it was a simple touch now it's a hold mechanism..Two seconds or so, no real biggie-- but you usually expect updates to make life easier.. Otherwise I am really happy with the app.. Could have done with out the update, since I didn't have any problems before.

Terrible App

I hate giving a poor review for anything but in this case it appears I have no choice. The iPhone platform as we all know, allows for endless App possibilities, and the need for an App like this speaks volumes on what some of us are interested in - knowing the amount of daylight hours at any given time in multiple locations. Great, right? You would think so. I was excited when I found this one, however, upon installing I discovered that you can't add cities for Canada, (even though Canada is listed as a country), so I'm encountering the same issue as the previous reviewer looking for the 'city 'Hong Kong. The support site for this App, and the developers website both appear to be down or non-existent at the moment. Too bad, as I would have preferred to find out if this was something I was or was not doing from the developer, but this was not possible. This looked very promising to me and others obviously, it's a shame it doesn't work as advertised.

Not very stable

I don't quite understand why people keep saying that an app should be free. Do they give away their own time and work without pay, too? This app costs a buck, get over it. The widget is free because the overhead to charging a buck is simply too much. The app store makes it easy. As for functionality, when they get the kinks out it may be really nice. Right now, the omission of "current location" is mind boggling, given that the phone & touch has the functionality, and should actually be the easiest to implement (instead of converting city to coordinates). The fact that the app is crashing left and right is somewhat tedious, but one can remain hopeful... If you think you "wasted" a buck on this, skip the Starbucks latte next time and get a few more apps instead.

Sol: Daylight Clock
View In iTunes
  • $0.99
  • Category: Utilities
  • Updated: Jul 24, 2008
  • Version: 1.0.1
  • Size: 0.1 MB
  • Language: English
  • Seller: Alexander Valys

Compatibility: Requires iOS 2.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

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