Update dateformatter.js
Update dateformatter.js

Corrected date calculation for day of week
gogobook/swig,notthetup/swig,benpptung/swig,CuteSephiroth/swig,genify/swig,genify/swig,gitoneman/swig,cgvarela/swig,gold3bear/swig,jrvldam/swig,zetlen/swig,jerrylin1002/swig,cwhatley/swig,xiaoyang2022/swig,zongkelong/swig,genify/swig,notthetup/swig,gitoneman/swig,mahdaen/swig,xiaoyang2022/swig,CuteSephiroth/swig,mrazvan92/swig-template-callback,paularmstrong/swig,zongkelong/swig,cwhatley/swig,mrazvan92/swig-template-callback,gold3bear/swig,mrazvan92/swig-template-callback,Lochlan/swig,Lochlan/swig,DragWeb/swig,notthetup/swig,cwhatley/swig,paularmstrong/swig,jrvldam/swig,jerrylin1002/swig,CuteSephiroth/swig,Thunf/swiger,zongkelong/swig,paularmstrong/swig,DragWeb/swig,zetlen/swig,jrvldam/swig,Thunf/swiger,gogobook/swig,cgvarela/swig,DragWeb/swig,jerrylin1002/swig,benpptung/swig,benpptung/swig,gitoneman/swig,zetlen/swig,Lochlan/swig,xiaoyang2022/swig,cgvarela/swig,mahdaen/swig,gold3bear/swig,gogobook/swig,Thunf/swiger,mahdaen/swig