MySiderealTime

An app for Astronomy and Astrophotography enthusiasts. MySiderealTime is a useful Sidereal Clock utility to assist you while you use your telescope and mount during your astronomy viewing session or for your night of astrophotography. The local sidereal time is displayed in hours minutes and seconds in 24 hour format. The local time is also displayed, and by tapping the local time, it will toggle between 12 and 24 hour formats. Latitude and Longitude can be displayed in either decimal degrees or in degrees, minutes, seconds. Tapping the Latitude and Longitude display will toggle between formats. The display defaults to night vision mode as to not disturb your night vision. For viewing indoors or in bright sunlight, the display can be switched to day vision mode by tapping on the sun icon. The display can be switched back by tapping on the moon icon. The device GPS sensor is used to determine your exact location so the correct Sidereal Time can be displayed along with your latitude and longitude coordinates. The display will also show the current GMT, your local offset from GMT, and if (DST) Daylight Savings Time is in effect.

Category : Tools

Reviews (17)

Law. W. Apr 25, 2022

It's a good app but bright blue bar across the top of the screen is rather blinding. Kind of defeats the night vision red. So that why I gave it 3 stars.

Abr. G. Aug 29, 2019

Excellent, but would be even better if it could get daily notifications for a specific time since you can't just use a set time on your email calendar. 13:30 reminders would probably interest many users.

Wil. K. Sep 24, 2019

Just what I needed. Only improvement would be a "freeze" function for timing transits. Observe transit, tap freeze button, record time. Second tap restarts clock.

And. P. Jul 28, 2020

One of those very few Apps that you have to admire for its no nonsense approach, does what it should do and no ads, quality.

c.b. d. Jun 12, 2019

Love the simplicity of this tool! All it lacks is a UTC readout -vs- GMT. Fix that and it will be perfect.

Joe. B. Apr 8, 2019

Displaying figures in dark red on a black background is not a clever thing to do. It is unreadble

Moh. M. N. Aug 29, 2020

I couldn't use this app, some countries have a half hour differential with utc, (e.g Iran utc +3.5)

rob. May 15, 2022

Nice muted colours to help keep yr night vision intact

m. j. Aug 28, 2020

I use it every day for my meditation. Thank you.

Edd. T. Aug 23, 2020

A simple app that does what it says.

rog. s. Feb 10, 2018

Works great! Always get confused about sidereal time. Now I don't have to. Plus gives you GMT.

Ste. B. Dec 3, 2016

Design Rov's,Mini submarines for the offshore drilling Companies.

A. G. u. Mar 4, 2018

Great app ! Simple and useful. Since GMT has been replaced by UTC in 1976 may be is it time to reflect the change here ? Otherwise, showing the Julian day would be a great addition. Thanks !

Dav. May 17, 2017

Seriously - this app is worthy of the Fourth Dimension. Comfortable, quick, and accurate. Thank You !

Ste. S. Nov 25, 2017

Would prefer UTc to GMT in display; otherwise perfect!

A. G. u. Nov 7, 2017

Wish I could use it like the system clock in the weatherbug widget...

Vla. I. Jul 16, 2018

The best