VelaClock 2.3.0 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application is included in System Tools. This Mac application was originally created by Vela Design Group. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
VelaClock displays the current level of natural light (daylight, twilight, or night), sun and moon rise/set times, moon phase information, local times and country flags for cities throughout the world. Astronomical calculations are performed by an internal code module.
You may want to check out more Mac applications, such as VelaClock Deluxe, which might be similar to VelaClock.