How long does it take for the XBee Cellular module to register on the network to transmit data after waking from sleep?

I have the XBC-V1-UT-001 Cellular module and am trying to estimate its average power consumption and need to know how long it usually takes to register on the cell network when waking up from sleep mode? I want to base my calculation on the assumption the the device wakes up once per day from sleep to transmit a small packet of information and then returns to sleep.

The XBee Cellular Cat-1 Verizon takes just under a minute to register to the network from sleep, the same amount of time it takes from boot.