How Many Days Until World Blood Donor Day 2027?

When is World Blood Donor Day 2027?

World Blood Donor Day 2027 is on Monday, June 14, 2027. It is held on June 14 every year, so only the weekday changes. The 2028 date is Wednesday, June 14.

Source for the date: World Health Assembly resolution WHA58.13.

About World Blood Donor Day

Red cells keep for up to 42 days in a blood bank fridge and platelets for about five, which is why blood services need donors every week of the year. About 118.5 million donations are collected around the world each year. The World Health Organization counts 79 countries that draw more than 90% of their blood from voluntary unpaid donors, while 54 still rely on patients' relatives or paid donors for over half.

The man whose birthday sets the date kept working long after his ABO discovery. Landsteiner moved to New York in 1922 to join the Rockefeller Institute, and in 1940 he and Alexander Wiener described the Rh factor, named for the rhesus monkeys used in their research. He was still at his laboratory bench in June 1943 when he had the heart attack that killed him two days later.

How many business days until World Blood Donor Day?

Without weekends, World Blood Donor Day is 171 weekdays away, Monday to Friday from tomorrow through Monday, June 14, 2027. Take out the 7 federal holidays on the way, Veterans Day through Memorial Day, and the US count is 164 business days. Each country drops its own public holidays, so the UK gets 164, Canada 165 and Australia 165.

Holidays that only a state, province or employer gives, between October 19, 2026, and June 14, 2027, are still in the count. The business days calculator can take yours out.

Countdown milestones to World Blood Donor Day

The countdown to World Blood Donor Day reaches 200 days on Thursday, November 26, 2026 and gets down to 1 day on Sunday, June 13, 2027.

Days until World Blood Donor Day from other dates

A week from today, on Sunday, October 25, there will be 232 days to go until World Blood Donor Day, and from Sunday, November 1 it will be 225 days.

June 2027

World Blood Donor Day 2027 facts

About this count

Each midnight takes one off the 239. Today is left out and June 14 itself is counted, so on Sunday, June 13 the page will show 1 day to go. US clocks go back on Sunday, November 1 and forward again on Sunday, March 14, 2027, which changes the hours but not the number of days.

In Excel or Google Sheets, =DATE(2027,6,14)-TODAY() gives the same 239 today; add 1 to count today as well.

This countdown to World Blood Donor Day 2027 was worked out on Sunday, October 18, 2026 (US Eastern time), and your browser recounts it from your own date when the page opens.

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