VishuisaHindufestivalcelebratedbythepeopleofKeralaintheTuluNaduregionofKarnatakaMahedistrictofPondicherryandsomedistrictsinTamilNaduVishuiscelebratedandobservedtomarkthefirstdayoftheMedamtheninthmonthaccordingtotheMalayalamcalendarVishuiscelebratedinthesecondweekofAprilandusuallyfallsonthe14thor15thThisyearVishuisbeingcelebratedApril15VishuisdeclaredaregionalholidayinKeralaItisbelievedthattheMalayalamcalendarwhichisalsoknownasKollaVarshamhasbeeninplacesinceCE825