1,374. The Third Series of Fasts for Rain

Hilchos Taaniyos 3:5

If this second series of communal fasts passes without being answered, the court declares a series of seven more communal fasts: Monday, Thursday, Monday, Thursday, Monday, Thursday and Monday. These are the only such fasts on which pregnant and nursing women must also fast. On the earlier fasts, they are not required to abstain from eating though they likewise should not indulge themselves. Rather, they should only eat what is necessary for the health of their children.

Hilchos Taaniyos 3:6

On these seven fasts the kohanim on duty in the Temple fast for the entire day, while the kohanim of the beis av fast for part of the day but do not complete the fast. All the prohibitions that were observed in the second series of fasts also apply in these seven fasts.