18 April 2021

• 108th day of the year. There were then 257 days left in 2021.
• 16th Sunday of 2021.
• on the 15th week of 2021 (using ISO standard week number calculation).
• 30th day of Spring. There were 64 days left till Summer.
• Birthstone for this day: Diamond and Crystal

There are no major holidays or observances in the EU for this date.

• World Heritage Day - Popular in: South Africa, India, United Kingdom, Australia
• Día de los Padrinos (Argentina) - Argentina
• Country Music Awards (ACM) - United States
• Zimbabwe Independence - Popular in: India, United Kingdom