# SideralClock

> Displays Local Solar Time, Greenwich Solar Time, Greenwich Sidereal Time, and Local Sidereal Time. (iPhone/iPad app by Fabio Rendelucci.)

- Source: https://appshunter.io/ios/app/sideralclock/id460828053 (this page in markdown: same URL + `.md`)
- Developer: [Fabio Rendelucci](https://appshunter.io/developer/410590236)
- Category: Education, Utilities
- Price: $0.99
- Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 1 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Russian, Chinese (Simplified, China), European Spanish
- Released: 2011-09-02
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/sideralclock/id460828053/reviews.md

## What is SideralClock?

Sideral Clock display your Local Solar Time, Greenwich Solar Time, Greenwich Sideral Time and your Local Sideral Time (LST). Fundamental for all astronomers and "trekkers".

Available in Portuguese, English, Spanish, Italian, French, German, Japanese, Russian and Simplified Chinese (system messages only, not screen layout messages)

Developed for iOS 13 and above.

## Key features

- Local Solar Time display
- Greenwich Solar Time display
- Greenwich Sidereal Time display
- Local Sidereal Time display
- Multilingual support
- Developed for iOS 13+

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/sideralclock/id460828053/reviews.md

### 1/5 — Fake site.com?

*2019-12-29, version 2*

Why is the app site and app help listed at non-existent site called fake site.com. I’m deleting the app

**Developer response:** We mistakenly posted the URL we used for testing (so it has a "strange" name). We are already arranging to change the publication to the correct URL. We apologize for the inconvenience.

## Frequently asked questions about SideralClock

### What is SideralClock used for?

SideralClock displays Local Solar Time, Greenwich Solar Time, Greenwich Sidereal Time, and Local Sidereal Time. It is fundamental for astronomers and trekkers who require precise timekeeping for celestial observations and navigation.

### What languages does SideralClock support?

SideralClock is available in Portuguese, English, Spanish, Italian, French, German, Japanese, Russian, and Simplified Chinese. System messages are translated, though screen layout messages are not in all languages.

### What devices is SideralClock compatible with?

SideralClock is developed for iOS 13 and above and is supported on iPhone and iPod devices.

### How much does SideralClock cost?

SideralClock is a paid application, priced at $0.99.

### When was SideralClock last updated?

The latest version of SideralClock is 2.1, and it was last updated on June 21, 2020.

### What is the age rating for SideralClock?

SideralClock has an age rating of 4+, making it suitable for a wide range of users.

### Does SideralClock have ads?

No, SideralClock does not contain advertisements.

### What is the user feedback on SideralClock?

SideralClock has received one rating of 1.0 stars, indicating a very low user satisfaction score based on available data.

## Version history (last 5 releases)

### 2.1 — 2020-06-21

Layout adjustment.

### 2 — 2019-11-04

More precision with nutation in longitude correction;
New Enterprise StarTrek™ layout style.

### 1.2.1 — 2011-11-16

Memory management. Correct bug for some locations.

### 1.2 — 2011-10-06

This version corrects TimeZone bug.

### 1.1 — 2011-09-28

Fix minor bugs. Presents Julian Date.

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## More apps by Fabio Rendelucci

- [LunarCalc](https://appshunter.io/ios/app/lunarcalc/id410590233)
- [TeleCalc](https://appshunter.io/ios/app/telecalc/id413263665)
- [EasterDate](https://appshunter.io/ios/app/easterdate/id415940926)
- [Resistor CC](https://appshunter.io/ios/app/resistor-cc/id445510576)
- [QSO](https://appshunter.io/ios/app/qso/id462025640)

All apps by Fabio Rendelucci: https://appshunter.io/developer/410590236

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*