Solar Energy Diagram PNG Images (664)
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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.
World Heart Day - Scale up prevention of heart attack and stroke.
Arbor Day (or Arbour Day in some countries) is a secular day of observance in which individuals and groups are encouraged to plant trees.
Pongal, also referred to as Thai Pongal, is a multi-day harvest festival of South India, particularly in the Tamil community.