### 2.20.3.2. 14.3.2 Seasonal-Deciduous Offset Trigger[¶](#seasonal-deciduous-offset-trigger "Permalink to this headline")

After the completion of an onset period, and once past the summer solstice, the offset (litterfall) period is triggered when daylength is shorter than 39300 s. The offset counter is set at the initiation of the offset period: \\(t\_{offset} =86400\\cdot n\_{days\\\_ off}\\), where \\({n}\_{days\\\_off}\\) is set to a constant value of 15 days. The offset counter is decremented on each time step after initiation of the offset period, until it reaches zero, signaling the end of the offset period:

(2.20.64)[¶](#equation-20-64 "Permalink to this equation")\\\[t\_{offset}^{n} =t\_{offset}^{n-1} -\\Delta t\\\]

