'In that Day' in the Bible

Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?

About that time Jesus was walking through a grainfield on the Sabbath day. His disciples were hungry so began picking off some heads of grain to eat [the kernels]. [Note: It was an accepted practice for people in that day to be permitted to do this as they walked along paths bordering a grainfield].

And in that day Jesus, having gone forth from the house, was sitting by the sea,

In that day there came near to him Sadducees, who are saying there is not a rising again, and they questioned him, saying,

They stripped off His clothing and placed a scarlet robe on Him [Note: Mark 15:17 calls this a "purple" robe because in that day, any color with a mixture of "red" in it was often called "purple," so the use of "scarlet" was appropriate].