- Endangered Species Day May 17
- World Migratory Bird Day May 11
- Passover April 22
- National Bicycle Day April 19
- World Art Day April 15
- India New Year April 14
- Día Internacional del Beso April 13
- International Day of Human Spaceflight April 12
- International Tartan Day April 6
- April Fools Day April 1
- Dominican Republic Independence Day February 27
- Easter March 31
- Good Friday March 29
- Maundy Thursday March 28
- International Waffle Day March 25
- Palm Sunday March 24
- Purim March 23
- World Poetry Day March 21
- Spring Equinox Day March 20
- National Pi Day March 14