Home / News / Bounty - ICDevs.org Motoko DateTime Library

Austin Fatheree, March 24 2023

ICDevs.org DateTime Library - #53

Current Status: Awarded

  • Discussion (03/24/2023)
  • Ratification: (TBD)
  • Open for application: (TBD)
  • Assigned (TBD)
  • In Review
  • Closed https://github.com/edjCase/motoko_datetime/

Forum Link - Discussion

Bounty Details

  • Bounty Amount: $10,000 USD of ICP at award date.
  • ICDevs.org Bounty Acceleration: For each 1 ICP sent to 6e8afebab59f703356e189297e3f49fbe18ace5150ccc43f74f30ceb3f6b5ece, ICDevs.org will add .25 ICP to this issue and .75 ICP to fund other ICDevs.org initiatives.
  • Developer Type: Individual
  • Opened: TBD
  • Time Commitment: Months
  • Project Type: DateTime Library for Motoko
  • Experience Type: Expert - DateTime and Motoko


The proposed project aims to create an updated and fully-featured datetime library for Motoko. The current datetime library in Motoko is basic and does not consider time zones, which can lead to inaccuracies in date and time calculations.

The new datetime library will be designed to be comprehensive and feature-rich, with support for time zones, date and time formatting, and a range of date and time calculations including duration arithmetic. The library will also include support for leap years and daylight saving time, which are important considerations in many applications.

To create this new datetime library, the project will require anf experienced developers who is proficient in Motoko and that has a strong understanding of date and time calculations. The dev will work closely with the Motoko community to ensure that the new library meets the needs of developers working on the Internet Computer.

There are several popular open source DateTime frameworks written in other languages such as Luxon in Javascript, Moment in Javascript and Joda-Time in Java. The new datetime library should be designed taking the best practices and learnings from these libraries while incorporating the unique features and requirements of Motoko.

Overall, the new datetime library will provide a valuable resource for developers working on the Internet Computer, enabling them to create more accurate and reliable applications that consider time zones and other important date and time factors.

The solution should include a significant test suite similar to the test suite of the libraries mentioned above.

This bounty gives the opportunity to

  • learn about Motoko
  • learn about DateTime programming

To apply for this bounty you should:

  • Include links to previous work building web applications and any other open-source contributions (i.e., your Github).
  • Provide a brief overview of how you will complete the task. This can include things like which dependencies you will use, how you will make it self-contained, the sacrifices you would have to make to achieve that, or how you will make it simple. Anything that can convince us you are taking a thoughtful and expert approach to this design.
  • Give an estimated timeline on completing the task.
  • Post your application text to the Bounty Thread

Selection Process

The ICDevs.org developer’s advisors will propose a vote to award the bounty and the Developer Advisors will vote.

Bounty Completion

Please keep your ongoing code in a public repository(fork or branch is ok). Please provide regular (at least weekly) updates. Code commits count as updates if you link to your branch/fork from the bounty thread. We just need to be able to see that you are making progress.

The balance of the bounty will be paid out at completion.

Once you have finished, please alert the dev forum thread that you have completed work and where we can find that work. We will review and award the bounty reward if the terms have been met. If there is any coordination work(like a pull request) or additional documentation needed we will inform you of what is needed before we can award the reward.

Bounty Abandonment and Re-awarding

If you cease work on the bounty for a prolonged(at the Developer Advisory Board’s discretion) or if the quality of work degrades to the point that we think someone else should be working on the bounty we may re-award it. We will be transparent about this and try to work with you to push through and complete the project, but sometimes, it may be necessary to move on or to augment your contribution with another resource which would result in a split bounty.


The bounty was generously funded by the DFINITY Foundation. If you would like to turbocharge this bounty you can seed additional donations of ICP to 6e8afebab59f703356e189297e3f49fbe18ace5150ccc43f74f30ceb3f6b5ece. ICDevs will add .25 for every 1 token donated to the bounty. All donations will be tax deductible for US Citizens and Corporations. If you send a donation and need a donation receipt, please email the hash of your donation transaction, physical address, and name to [email protected]. More information about how you can contribute can be found at our donations page.

FYI: General Bounty Process


The draft bounty is posted to the DFINITY developer’s forum for discussion

Ratification: (01/09/2023)

The developer advisor’s board will propose a bounty be ratified and a vote will take place to ratify the bounty. Until a bounty is ratified by the Dev it hasn’t been officially adopted. Please take this into consideration if you are considering starting early.

Open for application

Developers can submit applications to the Dev Forum post. The council will consider these as they come in and propose a vote to award the bounty to one of the applicants. If you would like to apply anonymously you can send an email to austin at icdevs dot org or sending a PM on the dev forum.


A developer is currently working on this bounty, you are free to contribute, but any splitting of the award will need to be discussed with the currently assigned developer.

In Review

The Dev Council is reviewing the submission


The award has been given and the bounty is closed.

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