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Arbor Day (or Arbour Day in some countries) is a secular day of observance in which individuals and groups are encouraged to plant trees.
Celebrating International Biodiesel Day is not limited to a single day. You can continue to support biodiesel initiatives, spread awareness, and make sustainable choices throughout the year to contribute to a greener and cleaner environment.
Easter and its related holidays are moveable feasts, not falling on a fixed date; its date is computed based on a lunisolar calendar (solar year plus Moon phase) similar to the Hebrew calendar.
Pongal, also referred to as Thai Pongal, is a multi-day harvest festival of South India, particularly in the Tamil community.