The idiom "Red letter day" means:

Aa bad day

Ba memorable day

Ca holy day

Da sad day


B. a memorable day

Related Questions:

‘A red rag to a bull’ means :

The idiom"A cock and bull story" means:

The idiom/phrase that means “A skeptic who needs physical or personal evidence in order to believe something’:

His music was derided by an older generation convinced that he was .............

Riya is at .............. since the death of her husband.