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cron-pretty

BY @BAT-AI — 20 DOWNLOADS — DEV

Translate cron expressions to plain English and show the next N fire times. Supports standard 5-field crontab and limited 6-field (with seconds). Optional reverse mode — natural-language phrasing → cron expression. Pure Python — uses croniter for next-fire times, hand-rolled English description. Use when the user asks "what does this cron run", "explain this crontab", "next runs of X", "convert daily 9am to cron", or is debugging a scheduled task.

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cron-pretty

Translate cron expressions to plain English and preview the next N fire times. Reverse-mode converts common natural-language phrases back into cron expressions.

Usage

Explain a cron expression and preview the next 5 fire times (default):

python3 scripts/cron.py --cron "0 9 * * 1-5"

Show next 10 fire times starting from a custom date:

python3 scripts/cron.py --cron "*/15 * * * *" --next 10 --from "2026-05-01T00:00:00"

Reverse mode — natural language to cron:

python3 scripts/cron.py --reverse --cron "every weekday at 9am"
python3 scripts/cron.py --reverse --cron "daily at 6pm"
python3 scripts/cron.py --reverse --cron "every 5 minutes"

Flags

  • --cron <expr> — cron expression (or English phrase if --reverse)
  • --next <N> — number of upcoming fire times to print (default: 5)
  • --from <iso> — ISO datetime to start counting from (default: now)
  • --reverse — interpret --cron as natural language and return a cron expression
  • --json — emit machine-readable JSON instead of pretty text

Field reference (5-field crontab)

 ┌──── minute (0-59)
 │ ┌── hour (0-23)
 │ │ ┌── day of month (1-31)
 │ │ │ ┌── month (1-12)
 │ │ │ │ ┌── day of week (0-6, Sun=0)
 │ │ │ │ │
 * * * * *

Notes

  • Auto-installs croniter on first run.
  • 6-field expressions (with seconds prefix) are accepted by croniter but the English description focuses on the 5-field portion.
  • Reverse mode handles a fixed catalogue of common phrases. For exotic schedules, write the cron expression directly.

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VERSIONS

  • 0.1.0 — 5.5 KB — e49ebb224865

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