arduino pro mini wakeup time

Hi i am using arduino pro mini for my project. here device will be sleep always and wakes up every 4 seconds with watch dog timer.

after wakesup device will go back to sleep.

i want to know the time. how long it was wakeup?

hope it will be in milliseconds. can someone please tell me the time.

Don’t know how long it takes exactly, but it’s just a couple of instructions. So yeah, it’s <1ms.

septillion:
Don’t know how long it takes exactly, but it’s just a couple of instructions. So yeah, it’s <1ms.

Because my device is consuming 0.05mA in sleep mode and 4mA when it wakes up every 4 seconds once.

i want to calculate total power consumption per hour

Average current in mA = ((seconds awake per hour)*4mA + (seconds asleep per hour)*0.05mA)/3600