20 17 20 17 when was typhoon No.21generated?

Typhoon No.20 in 20 17 was generated in the afternoon of June 12, and landed on the northern coast of Luzon Island in the Philippines at 3 am on June 13. At 5: 00 am on June 13, its center is located in the northern Philippines and is expected to move southwest. After moving into the eastern South China Sea on the morning of June 13, it turned to the northwest. It will land in the coastal area from Sanya, Hainan to Zhanjiang, Guangdong from the evening of 15 to the morning of 16, or it may skim the offshore waters in the south of Hainan Island and move to the north of Vietnam.

It seems that the typhoon "Lane" on February 20 171hasn't been generated yet, just a tropical cyclone in the Pacific Ocean.