1 April - April fools day!
In Sweden we say "april, april din dumma sill" when someone has been pranked (April, April you silly herring!).
30 April - "Valborgsmässoafton" (Walpurgis)
Join the rest of the Swedes by the bonfire and celebrate the arrival of spring!
30 April - The Birthday of H. M. King Carl XVI Gustaf
The Royal family meet the public at the Outer Courtyard, at the Royal Palace of Stockholm.
For more information check the Swedish Royal Court Calendar: