datez: convert a time into several timezones

Related tags

Date and time datez
Overview

datez: convert a time into several timezones

In July, when it is 16:00 in Canberra, what time is it in Caracas, and where I am in Cambridge?

$ datez 2021-07-21.16:00:00 Australia/Canberra America/Caracas
2021-07-21.06:00:00+0000 (UTC)
2021-07-21.16:00:00+1000 (Australia/Canberra)
2021-07-21.02:00:00-0400 (America/Caracas)
2021-07-21.07:00:00+0100 (Europe/London)

install

datez is written in Rust, so use cargo install.

We have tested datez on:

  • Unix
    • macOS
    • FreeBSD
    • Debian Linux
  • Windows
    • cmd.exe
    • Powershell

usage

datez

You should wite the time in ISO 8601 / RFC 3339 format but without a UTC offset, and list as many tz database timezone names as you want.

The time is read using the first timezone; it is converted to UTC and printed in UTC and in every timezone you listed, and in your local timezone (if possible).

The local timezone is discovered from the TZ environment variable if that is set, or by an OS-specific mechanism; it isn't an error if neither of those work, but you have to list your timezone explicitly.

On Unix, datez reads the symlink at /etc/localtime.

On Windows, datez calls Win32 GetTimeZoneInformation().

licence

This was written by Tony Finch <[email protected]>
and Ollivier Robert <[email protected]>
You may do anything with it. It has no warranty.
https://creativecommons.org/publicdomain/zero/1.0/
SPDX-License-Identifier: CC0-1.0

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Comments
  • Fix Windows timezones.

    Fix Windows timezones.

    Strings returned by most Win32 syscalls are in fact arrays of UTF16 codepoints and trailing "0000" are not stripped out when converting into OsString which messes up string conversions. In addition, some timezones are using unofficial names, try to work around that.

    opened by keltia 1
Releases(datez-0.1.0)
Owner
Tony Finch
Tony Finch
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