Open source task scheduling software library needs icon design

Want to win a job like this?
This customer received 8 icon designs from 5 designers. They chose this icon design from Chameera Jayawardana as the winning design.
Join for free Find Design JobsIcon Design Brief
An icon is needed for a software library named Quartz. Library is used by software developers to add task scheduling capabilities to their programs.
Examples of places where the icon will be shown:
* https://www.quartz-scheduler.net/ (project's main page, header)
* https://www.nuget.org/packages?q=quartz+author%3Alahma (result listing where icon will be also displayed as part of result)
The key purpose of the software library is to run tasks at specific times (schedules). Consumers of this software library expect precise, fault tolerant execution within close to millisecond precision. Library users can schedule their logic to run in intervals like "every 10th second forever", "every Monday at 9 am", "every second week on Wednesdays from 9 pm to 11 pm".
Submissions must include a 256x256, 128x128, 32x32 and 16x16 pixel representation of the design.
The usage will be mostly on the web so basically an icon for the site header and a bigger version for the welcome page and favicon.
Important: An appropriate 16x16 pixel representation of the design needs to be included (web browser favicon usage - the icon on address bar). A simplified version of the main design will be accepted, as we acknowledge there are not a lot of pixels to work with. This version should still have a visual connection to the full size icon.
Target Market(s)
Software professionals developing software
Industry/Entity Type
Information Technology
Look and feel
Each slider illustrates characteristics of the customer's brand and the style your logo design should communicate.