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.
UD5 Toolkit
Select your region and see a static calendar of common pollen seasons. Informative for allergy sufferers.
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.
Select a country and year to see every public holiday. Static data for major countries. Plan your vacations.
Plan insulin or other injection sites with a visual body map and date log. Prevent lipohypertrophy.
Add recurring bills with amounts and see a monthly calendar with due date indicators. Simple finance organizer.
List of major annual meteor showers with next peak date and moon phase prediction. Stargazing planner.
Set start date and egg type (chicken, duck, quail) to generate a hatching timeline with milestone alerts (lockdown, pip, hatch). Local only.
Fill in event details and generate 'Add to Calendar' links for Google, Outlook, and Yahoo, plus a downloadable .ics file.
Shows today's moon phase, age, and percent illuminated. Simple visual display. Works offline.
Fill in title, date, time, and location to generate a downloadable .ics meeting invitation. Works with all major calendars.
Parse an iCalendar file and output the events as a clean JSON array. For developers integrating calendar data. Client‑side only.
View the moon phase for any date in past or future. See full moon dates and eclipses for a given year.
Enter a year to check if it is a leap year. Shows the rule explanation and next/previous leap years. Simple reference.
Convert dates between Hijri and Gregorian using the Umm al‑Qura algorithm. Approximate local moon sighting may vary.
Enter any date and get the ISO week number. Also shows start and end of that week. Handy for project planning.
Convert a Gregorian calendar date to its Julian Day Number and vice versa. Used in astronomy and mainframe computing.
Convert between Gregorian and Hijri (Islamic) dates. Approximate visual reference. Local algorithm.