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Top 23 Datetime Open-Source Projects
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Project mention: The Day.js Dilemma: How Should We Handle OSS Maintainers Going MIA? | news.ycombinator.com | 2024-04-12
As web developers, we heavily rely OSS packages. One popular example is Day.js, a JS lib for parsing, validating, manipulating, and formatting dates. It's a widely-used alternative to Moment, with over 17mil weekly downloads on npm.
A critical bug was discovered in Day.js (see: https://github.com/iamkun/dayjs/pull/2118) causing incorrect date manipulation (add, subtract) when in UTC TZ. This could have severe implications for any project relying on Day.js for date-related functionality. However, the maintainer of the project appears to be unresponsive, leaving the bug unresolved and the future of the library uncertain.
This raises some important questions for our community:
- At what point should we consider a widely-used OSS project "abandoned" if the maintainer is unresponsive?
- Is forking the project the best solution, or should we first try to reach out to the maintainer through other channels?
- Are there established community guidelines around responsiveness expectations for widely-used OSS projects?
- What are successful examples of community-driven forks or maintenance after a maintainer stepped away?
I am very aware that many of these developers give their spare time for free for these projects, with little or no payment, and I am very thankful for all their work. This developer does get some money (a small amount?) through OpenCollective, and possibly also works for a company (in China?) that makes a UI library, which I think uses Day.js internally.
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Project mention: I am looking for a troubled/bad open source codebase | /r/ExperiencedDevs | 2023-07-12
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
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Project mention: A bug which is only a bug five days out of the year | news.ycombinator.com | 2024-01-31
To be honest, use a library where someone else figured out the ambiguities and accounted for the edge cases. Good starting point: https://moment.github.io/luxon/#/math
Date-fns is fine for simpler use cases but Luxon is a lot more complete, especially where it comes to time zones.
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Project mention: Creating Command-Line Tools in Python with argparse - Guide | /r/learningpython | 2023-12-09
I did the same with datetime and moved to using Pendulum.
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timeago.js
:clock8: :hourglass: timeago.js is a tiny(2.0 kb) library used to format date with `*** time ago` statement.
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WorkOS
The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
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Project mention: Ask HN: Did you encounter any Leap Year bugs today? How bad was it? | news.ycombinator.com | 2024-02-29
> but I'd be surprised if there was not a modern date library for C++
The standard library now includes . AFAIK: It was mostly written by Howard Hinnant. He now has more date/time libs that expand upon : https://github.com/HowardHinnant/date
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I'm not at my computer ATM to check, but it likely uses the current time. Except for a few programs that ask the OS for entropy, it's common for programs to seed the RNG with the current time. Even for non-open-source programs, you can typically game that by intercepting the initial request for the time (e.g. libfaketime on Linux, probably equivalents elsewhere.
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Project mention: Using Openpyxl - keep min date, handle line breaks, handle duplicates | /r/learnpython | 2023-05-01
Here is an example for a single cell (I'm using the dateutil package to parse the strings):
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react-native-date-picker
React Native Date Picker is datetime picker for Android and iOS. It includes date, time and datetime picker modes. The datepicker is customizable and is supporting different languages. It's written with native code to achieve the best possible look, feel and performance.
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Recognizers-Text
Microsoft.Recognizers.Text provides recognition and resolution of numbers, units, date/time, etc. in multiple languages (ZH, EN, FR, ES, PT, DE, IT, TR, HI, NL. Partial support for JA, KO, AR, SV). Packages available at: https://www.nuget.org/profiles/Recognizers.Text, https://www.npmjs.com/~recognizers.text
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angular-bootstrap-datetimepicker
Native Angular date/time picker component styled by Twitter Bootstrap
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
The latest post mention was on 2024-04-12.
Datetime related posts
- The Day.js Dilemma: How Should We Handle OSS Maintainers Going MIA?
- Creating Command-Line Tools in Python with argparse - Guide
- Everything you need to know about Date in Programming
- Show HN: Timezone-typesafe date and time library for Go
- is there a date calculate script/libary ?
- Why no std::chrono::year_month_day::operatator+=(const std::chrono::days&)?
- What library do you use to handle dates?
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A note from our sponsor - WorkOS
workos.com | 17 Apr 2024
Index
What are some of the best open-source Datetime projects? This list will help you:
| Project | Stars | |
|---|---|---|
| 1 | dayjs | 45,704 |
| 2 | flatpickr | 15,955 |
| 3 | Luxon | 14,842 |
| 4 | arrow | 8,546 |
| 5 | Pendulum | 6,050 |
| 6 | orjson | 5,520 |
| 7 | timeago.js | 5,128 |
| 8 | carbon | 4,494 |
| 9 | date | 3,035 |
| 10 | NodaTime | 2,656 |
| 11 | libfaketime | 2,566 |
| 12 | react-date-range | 2,546 |
| 13 | Chronology | 2,267 |
| 14 | dateutil | 2,242 |
| 15 | kotlinx-datetime | 2,178 |
| 16 | react-native-date-picker | 2,063 |
| 17 | dateparse | 1,983 |
| 18 | delorean | 1,845 |
| 19 | timex | 1,716 |
| 20 | Recognizers-Text | 1,643 |
| 21 | when | 1,314 |
| 22 | angular-bootstrap-datetimepicker | 1,284 |
| 23 | laydate | 1,112 |
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