# EclipseTimesCalc — When and where is the Eclipse

> When and where is the Eclipse (iPhone/iPad app by robert hawley.)

- Source: https://appshunter.io/ios/app/eclipsetimescalc/id1567295437 (this page in markdown: same URL + `.md`)
- Developer: [robert hawley](https://appshunter.io/developer/1567295439)
- Category: Reference, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 26.0 · 5 MB
- Languages: English
- Released: 2021-05-26
- Data updated: 2026-07-23
- User reviews in markdown: https://appshunter.io/ios/app/eclipsetimescalc/id1567295437/reviews.md

## What is EclipseTimesCalc?

This uses the algorithms developed over the past 150 years along with the best information available about the locations of sun, moon, and earth to predict when an eclipse will occur at a particular location on the earth.  This is useful to find where to go, where to look, and how the moon will move across the sun. It also provides the sunrise/set times for the location


## Version history (last 5 releases)

### 2.0 — 2026-07-10

The Where tab is now integrated with Apple Maps which will allow eclipse location planning without leaving the App. As of this version only the August 26 has limits marked, but version 2.1 will include limits for future eclipses

User input and display has been completely redesigned to make it easier to use for non eng_US customers. Date and time displays use the Region configuration. All input numbers are in regional formatting.

The program still allows signed numbers (now in local format)to be pasted when in degree mode

The prediction engine is identical to the previously released version and was rechecked for the summer 26 eclipse. 

Note that due to updates in the user interface, this program now requires iOS 26 (and also runs on iOS 27). Users without these systems should be offered version 1.8, which contains the same prediction engine but requires en_US data entry formats.

### 1.8 — 2026-04-26

Update prediction parameters for August 26 eclipse.  I also updated the two 2027 eclipses, but a new version will be required closer to those occurring

### 1.7 — 2024-09-05

update to latest (June 24) earth rotation (ΔT)

### 1.6 — 2024-01-13

Update for USNO ΔT of 1/1/24 so prediction matches earth rotation

### 1.5 — 2023-09-25

Fix a bug with display in dark mode

Change the ΔT for the eclipses from 2016 to Apr 2023 to reflect the actual measured values.  The program will now display correct predictions for these.  Eclipses prior to 2016 follow the historical trend.

## Apps similar to EclipseTimesCalc

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Eclipse Guide：March 2026](https://appshunter.io/ios/app/eclipse-guidemarch-2026/id1445813795) | 4.6 (767) | $1.99 | Reference |
| [Solar Watch](https://appshunter.io/ios/app/solar-watch/id1321127425) | 4.8 (114) | Free | Reference |
| [SunGraph](https://appshunter.io/ios/app/sungraph/id321534034) | 3.1 (12) | Free | Reference |

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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 2026-07-23.*