即日 (jí rì): this or that very day; in the next few days

The company issued a notice in the morning: starting from that very day, all employees must show their work ID to enter the office building.

He received the court's verdict and moved out of the long-disputed apartment that very day.

After the new policy was announced, it took effect from that very day, and many companies adjusted their filing procedures the same day.

After the doctor told him the test results, he checked into the hospital that very day to prepare for surgery.

Because the heavy rain cut off the roads, the government activated the emergency plan that very day and delivered supplies to the stranded villagers.