Jewish Clock
The basic idea is that certain daily deadlines were defined as portions of the day. For example, according to Jewish law, the latest time one can pray the morning prayer, Shacharit, is when a third of the day passed, or in other words, 4 out of the 12 hours of the day have passed.
The modern way of using charts which translate the laws defined by Shaot Zmaniyot into our familiar clock, are not needed anymore when using this clock. Shacharit deadline is alway at 4. Shabbat, or any new day for that matter, always start at 12.
In particular, the clock divides the day, starting at sunrise, and ending at sunset, into 12 equal parts, which are each called one day hour. The night is divided in the same manner.
An important observation is that day lengths keep on changing, as do the lengths of the nights. In the summer the days are longer, and they leave much less for the night, and in the winter vice versa.
A non trivial way of showing the fact that we have more day time during the summer, is showing the time moving slower during summer days! the clock ticks the same number of times as usual: 60 seconds
* 60 minutes
* 12 hours a day. But those seconds are longer! So the clock ticks slower.
Location. Sunrise and sunset are strongly tied to ones location. That's why Jewish Clock needs to know the device's location before showing the time. In a device with no location capabilities, Jewish Clock can not function.
The inspiration for Jewish Clock came from Jack Kustanowitz, from MountainPass Technology, and his iPhone app/website: ZmanimClock.com .I owe Jack many thanks for originating this idea, and for the elaborate explanations that appear on ZmanimClock.com and for the ones the were given in person.
One more thank you goes to Github user mikereedell, who open sources a java based sunrise/sunset library, which is used by Jewish Clock. You can find his code at https://github.com/mikereedell/sunrisesunsetlib-java.
Enjoy,
Yehuda [email protected]
Category : Tools
Reviews (24)
Nice app! One wish is the ability to add multiple alarms that fire according to solar time with the option of offsetting according to clock time (say, 15 minutes before 3rd hour). Thanks for your work!
awesome. does it have a sleep screen or digital option? I could show conventional time and halachic time both in small digital indicators, which would be great.
Please make it 1,080 Chalakim (not a ship with 60 rooms with 60 chairs in each room). Thanks!
Clever and elegant implementation of the concept. Thanks! Request: add options for defining the beginning and end of the day.
Very nice. I excpected to see Aldo the normal hours combined un another circle. And Also prayer times and other times
Love this, haven't been able to find this widget anywhere else. What are the chances you will be making an IOS version?
Love it. Use it all the time. ๐
Good app! Does Really ...
best app for me as newly Jewish community
I don't know how to open
I have wanted something like this for years without knowing it. I have never been able to explain the concept it so beautifully demonstrates.
Lovely app. If however, the user could move the hands back wards or forwards to find out the standand cooresponding time this app would become an invaluable tool. ื"ื.
I love it ๐๐๐๐๐๐
Best
I have used this for awhile now because of a desire to live by the time of the ancients rather than the clock. This app comes so close to usefulness, although 12-1 would be called the first hour, 1-2 would be called the second hour, etc. There were no ''hard' hours in the day other than sunrise and sunset. Also some ancient Hebrew sundials had eight hours in the day and four watches at night. The Romans introduced the 12 hour day much later. The app needs alarms. Prayer times are important, but there may be other reasons people would use this app. Currently, I use a sun clock used in vedic mysticism simply because it does have alarms and reads out both solar time and clock time. I give it three stars, and hope the writer continues to upgrade the clock.
Even if you're not Jewish, this simple app is very useful if you'd like to align your day with natural light and darkness. Adding alarms would be a great feature--wake me when the sun comes up.
Everything about it is almost simply fine EXCPT WIDGETใI hope there will be a widget and also I hope you can also make a Hebew Calendar in its English word and Hebrew word, with a converter to Gregorian Calendar๏ธ
It brings back the 'natural time' concept into one's lives. Please, add a widget option.
I always wanted a clock like this! Great implementation!
Thanks for creating this.
Great but sooo badly needs a widget!
Needs a widget
Please, add a widget. It would be perfect.
I liked it on my S8, but I got an A52 and the widget won't work on that phone, apparently. I hope you can update it.