JulianCal

JulianCal is the ultimate app for calculating and displaying the Julian Day of the year, an essential tool for production, logistics, and batch tracking.

KEY FEATURES

Real-time Julian Day
• Display Julian Day of the year (1-365/366)
• Automatic updates every minute
• Leap year indication

Customizable Batch Code
• Generate automatic batch codes with custom prefix
• 2 or 3-digit format for Julian Day
• One-tap copy to clipboard

Julian Day → Date Converter
• Convert instantly from Julian Day to calendar date
• Support for years 1900-2100
• Detailed info: day of week, week number, quarter

Interactive Calendar
• View calendar with Julian Day for each date
• Select any date to see details
• Switch between monthly and weekly view

Year Progress
• Visualize percentage of year passed
• Animated progress bar
• Days remaining until year end

Statistics & Information
• Week number of the year
• Current quarter (Q1-Q4)
• Days remaining in current year
• Julian Day Number (since January 1, 4713 BC)

USE CASES

Production & Manufacturing: Product tracking and batch codes
Logistics: Shipment organization and expiry dates
Agriculture: Harvest planning and crop cycles
Project Management: Working days and deadlines
Science & Research: Astronomical calculations

FEATURES

• Modern and intuitive interface
• Automatic light and dark theme
• Works offline
• Quick copy to clipboard
• Full Italian and English support
• Lightweight and fast
• Free app with discreet ads

PERFECT FOR

• Production managers
• Logistics operators
• Project managers
• Farmers and gardeners
• Researchers and students
• Anyone needing quick Julian Day calculations

Download JulianCal now and simplify your work with Julian Days!