WATCH AGAIN: May 4th military parade in Aizkraukle A fairly recent but very popular tradition is the May 4 military parade, which has taken place in a different Latvian city each year since 2012 (with a break during the Covid epidemic). This time around, the host is the city of Aizkraukle, which is about 90 kilometres south-east of Rīga close to the River Daugava.