ObservanceSaturday, October 23, 2027
National Mole Day
- Date
- Recurs
- Every year on October 23
- Category
- Celebration
National Mole Day is celebrated by chemistry teachers and students at 6:02 on 10/23, a nod to Avogadro's number (6.02 x 10^23), which defines the mole unit in chemistry.
Add to your calendarA calendar file for Apple Calendar, Google Calendar or Outlook. The event repeats every year. You can also subscribe to this observance or to the whole calendar.
← See everything October 23 celebratesKnow a holiday we're missing, or think this date has more going on? Today Celebrates tracks daily national, international, and world observances all year.