GitHub Actions UTC 时间转换 All In One

UTC

http://www.timebie.com/cn/stduniversal.php

UTC 时间

世界的每个地区都有自己的本地时间，在 Internet 及无线电通信时，时间的统一非常重要！

整个地球分为二十四时区，每个时区都有自己的本地时间。

在国际无线电通信中，为统一而普遍使用一个标准时间，称为通用协调时 (UTC, Universal Time Coordinated)。
UTC 与格林威治时间平均时 (GMT, Greenwich Mean Time)一样，都与英国伦敦的本地时相同。
UTC 与 GMT 含义完全相同。

格林尼治时间 0

http://zh.thetimenow.com/utc/coordinated_universal_time

北京时间 +8

const changeUTCTimeToChinaTime = () => {
  const timestamp = Date.now();
  // GMT+0800 (China Standard Time)
  // 28800000 毫秒 = 60 分/时 * 8 时 * 60 秒/分 * 1000 毫秒/秒
  return new Date(timestamp + 60 * 8 * 60 * 1000)
}

UTC 时间转换

00:08 => 09:03:55/ 09:04:32 / 09:01:06 ❌

23:00 => 07:09:31

23:59 => 08:00:00 ???

⚠️ GitHub Actions 定时任务，UTC 时间执行不一定准确，存在延迟 bug, 设置的时间不是实际执行的时间！

cron 定时任务

https://crontab.guru/

  schedule:
    - cron: '0 8  * * *'
     # UTC 时间每天 8 点，自动执行一次定时任务 ✅ cron / crontab

js 温度单位转换 / js temperature converter

摄氏度 ℃ & 华氏 ℉

32 华氏温标 === 0 摄氏温标

转换公式 Formula

(32°F − 32) × 5/9 = 0°C

function temperatureConverter(ft) {
  var fv = parseFloat(ft);
  return (fv - 32) / 1.8;
}

Convert from Fahrenheit to Celsius
从华氏度转换为摄氏度

℃=(℉-32)/1.8

convert from Fahrenheit to Kelvin
转换华氏度为 开尔文

K=((℉-32)/1.8)+273.15

demos

bug

OK

使用 GitHub Actions 的 corn 定时任务服务，每天自动发送一封天气预报 email

Linux shell script weather.sh

#!/usr/bin/env bash
# shebang 指定脚本的运行环境

# 设置 shell 中局部变量的值
set -eux

# 设置 env
LANGUAGE="zh-CN"
CITY=Shanghai
UNIT=m
# m 表示 °C
# u 表示 °F (default)
# UNIT=u
UA="Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4343.0 Safari/537.36"

# 文档见 wttr.in
# cURL 发送 GET 请求, 参数 -H header 设置请求头, -o output 输出文件 html
curl \
  -H "Accept-Language: $LANGUAGE" \
  -H "User-Agent: $UA" \
  -o result.html \
  https://wttr.in/$CITY?$UNIT
  # update, HTTPS ✅
  # wttr.in/$CITY?$UNIT
  # old, HTTP ❌
  # wttr.in/$CITY?format=4\&$UNIT


# refs
# https://github.com/xgqfrms/weather-email-action/issues/3

https://github.com/xgqfrms/weather-email-action/blob/main/weather.sh

~~/Users/xgqfrms-mbp/Documents/GitHub/gitHub-secrets-all-in-one/weather.sh~~

workflow weather-email-bot.yml


# This is a basic workflow to help you get started with Actions

name: Weather_Email_Bot

# Controls when the action will run. 
on:
  # Triggers the workflow on push events but only for the main branch
  push:
    branches: [ main ]
   schedule:
     - cron: '0 8 * * *'
     # UTC 时间每天 8 点，自动执行一次定时任务 ✅ cron / crontab

  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:

# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
  # This workflow contains a single job called "build"
  hello-job:
    # The type of runner that the job will run on
    runs-on: ubuntu-latest

    # Steps represent a sequence of tasks that will be executed as part of the job
    steps:
      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
      - uses: actions/checkout@v2

      # Runs a single command using the runners shell
      - name: Run a one-line script
        run: echo Hello, world!
  # weather job
  weather-email-bot:
    runs-on: ubuntu-latest
    steps:
      - name: 'Checkout codes'
        uses: actions/checkout@v1
      # 自动获取天气信息
      - name: 'Get Weather'
        run: bash ./weather.sh
      # 自定义 env, $GITHUB_ENV => ${{env.REPORT_DATE}}
      - name: 'Get Date'
        run: echo "REPORT_DATE=$(TZ=':Asia/Shanghai' date '+%Y-%m-%d %T')" >> $GITHUB_ENV
      # 自动发送邮件
      - name: 'Send mail'
        uses: dawidd6/action-send-mail@master
        with:
          server_address: smtp.163.com
          server_port: 465
          # username: ${{ secrets.MAIL_USERNAME }}
          # password: ${{ secrets.MAIL_PASSWORD }}
          username: ${{ secrets.MAILUSERNAME }}
          password: ${{ secrets.MAILPASSWORD }}
          # fix secrets name bug ✅
          subject: Shanghai Weather Report (${{env.REPORT_DATE}})
          html_body: file://result.html
          to: ${{ secrets.MAILTO }}
          from: GitHub Actions
          # content_type: text/html

      # test
      - name: 'Print Name bug'
        run: |
          echo "secrets.MAILUSERNAME = " ${{ secrets.MAILUSERNAME }}
      - name: 'Print GITHUB_ENV env ✅'
        run: |
          echo "❓ env.REPORT_DATE = " ${{env.REPORT_DATE}}

https://github.com/xgqfrms/weather-email-action/blob/main/.github/workflows/weather-email-bot.yml