What month is Renchen month?

The third year of Tiangan and the New Year, from Qingming to long summer, are the month of Renchen:

……

1976 Qingming in April to Long Summer in May

198 1 Qingming in April to long summer in May

1986 Qingming in April to Long Summer in May

199 1 Qingming in April to long summer in May

1996 Qingming in April to Long Summer in May

200 1 Qingming in April to long summer in May

Tomb-Sweeping Day has a long summer from April to May in 2006.

……