10-30-2016 17:03
10-30-2016 17:03
10-31-2016 01:15
10-31-2016 01:15
There's no need to manually log a walk as fitbits are quite happy to track that on their own.
If you do manually log a walk and you were wearing the fitbit at the time then it will overwrite the steps and calories that were tracked with those calculated for the manual entry. It is difficult to explain why, in your case, the manual entry had so many more steps.