UD5 Toolkit
Ordinal Date Converter – Day of Year to Calendar Date
Convert an ordinal date (day 1–365/366) to a standard calendar date and vice versa. Useful for agriculture, project planning, and understanding day-of-year notations.
Tag: Calendar & Day Finder
27+ toolsBonsai Wiring Calendar – Online Species & Season Checker
Select your bonsai species and current month to check if it's safe to wire branches. Prevent scars.
Feline Parasite Prevention Schedule – Flea, Tick & Worming
Select your region to get a year‑round calendar for flea, tick, heartworm, and intestinal worm prevention. Never miss a dose.
Dog Shedding Calendar – When to Expect the Fluff
Select your dog's coat type and region. See a calendar estimating heavy, moderate, and light shedding months to plan vacuuming and grooming.
No‑Spend Challenge Tracker – Mark Your Frugal Days
Click days on a calendar when you spent nothing. Build a streak and see how many no‑spend days you can achieve in a month.
Seasonal Fruit & Vegetable Calendar – What’s Fresh Now?
Select a month and region to see which fruits and vegetables are in season. Helps you shop smarter, save money, and enjoy better‑tasting produce.
Christmas Eve Day of Week – Multi‑Year Calculator
Find the day of the week for Christmas Eve in any year, past or future. Useful for scheduling travel, parties, and family gatherings.
Birthday & Anniversary Reminder – Never Miss a Date
Enter names and dates to see an upcoming birthday and anniversary list sorted by proximity. Optionally send yourself a notification when a date approaches.
Goat Hoof Trim Calendar – Every 6‑8 Weeks
Set a repeating 6‑8 week reminder to trim your goats’ hooves. Log the date and any notes about overgrowth or hoof rot concerns.
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.
Day of the Week Finder – What Day Was July 4, 1776?
Enter any past or future date and instantly learn the day of the week. Uses the Zeller’s congruence algorithm for accurate results.
Meteor Shower Calendar – Online Upcoming Peak Dates
List of major annual meteor showers with next peak date and moon phase prediction. Stargazing planner.
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.
Seed 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.
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.
Public Holidays Calendar - Online All Countries
Select a country and year to see every public holiday. Static data for major countries. Plan your vacations.
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.
Moon Phase & Illumination – Online Exact Percent Tonight
Shows today's moon phase, age, and percent illuminated. Simple visual display. Works offline.
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.
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.
Injection Site Rotation Calendar – Online Abdomen, Thigh, Arm
Plan insulin or other injection sites with a visual body map and date log. Prevent lipohypertrophy.
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.
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.
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.
Hijri to Gregorian Date Converter - Online Islamic Calendar
Convert between Gregorian and Hijri (Islamic) dates. Approximate visual reference. Local algorithm.
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.