UD5 Toolkit
Pollen Calendar Reference – Online Month‑by‑Month Plant Guide
Select your region and see a static calendar of common pollen seasons. Informative for allergy sufferers.
Tag: Calendar & Day Finder
17+ toolsSeed Starting Calendar - Online Last Frost Date Planner
Enter your average last frost date and generate a planting schedule for vegetables and flowers. Know exactly when to start seeds indoors or direct sow.
Public Holidays Calendar - Online All Countries
Select a country and year to see every public holiday. Static data for major countries. Plan your vacations.
Injection Site Rotation Calendar – Online Abdomen, Thigh, Arm
Plan insulin or other injection sites with a visual body map and date log. Prevent lipohypertrophy.
Bill Tracker – Online Visual Calendar for Due Dates
Add recurring bills with amounts and see a monthly calendar with due date indicators. Simple finance organizer.
Meteor Shower Calendar – Online Upcoming Peak Dates
List of major annual meteor showers with next peak date and moon phase prediction. Stargazing planner.
Egg Hatching Calendar - Online Incubation Countdown for Poultry
Set start date and egg type (chicken, duck, quail) to generate a hatching timeline with milestone alerts (lockdown, pip, hatch). Local only.
iCal Event to HTML Snippet - Online Add to Calendar Links
Fill in event details and generate 'Add to Calendar' links for Google, Outlook, and Yahoo, plus a downloadable .ics file.
Moon Phase & Illumination – Online Exact Percent Tonight
Shows today's moon phase, age, and percent illuminated. Simple visual display. Works offline.
Meeting Invite ICS Generator - Online Apple/Outlook Event
Fill in title, date, time, and location to generate a downloadable .ics meeting invitation. Works with all major calendars.
ICS to JSON Converter - Online Calendar Data Export
Parse an iCalendar file and output the events as a clean JSON array. For developers integrating calendar data. Client‑side only.
Lunar Phase Predictor - Online Moon Calendar Any Year
View the moon phase for any date in past or future. See full moon dates and eclipses for a given year.
Leap Year Checker - Online Verify February 29
Enter a year to check if it is a leap year. Shows the rule explanation and next/previous leap years. Simple reference.
Hijri to Gregorian Converter – Online Umm al‑Qura Estimate
Convert dates between Hijri and Gregorian using the Umm al‑Qura algorithm. Approximate local moon sighting may vary.
Week Number Finder - Online ISO Week of Year
Enter any date and get the ISO week number. Also shows start and end of that week. Handy for project planning.
Julian Date Converter - Online Calendar to JD
Convert a Gregorian calendar date to its Julian Day Number and vice versa. Used in astronomy and mainframe computing.
Hijri to Gregorian Date Converter - Online Islamic Calendar
Convert between Gregorian and Hijri (Islamic) dates. Approximate visual reference. Local algorithm.