Depreciation Calculation

I acquired and asset on 01.06.2012 for $841,259.35. The useful life for the asset is 15 years. The depreciation will be calculated to the exact day.

Therefore, I have worked out the following:

No. of days to depreciate in 2012 (Start from June) 214 No. of days to depreciate in 2013 365 No. of days to depreciate in 2014 365 No. of days to depreciate in 2015 365 No. of days to depreciate in 2016 366 No. of days to depreciate in 2017 365 No. of days to depreciate in 2018 365 No. of days to depreciate in 2019 365 No. of days to depreciate in 2020 366 No. of days to depreciate in 2021 365 No. of days to depreciate in 2022 365 No. of days to depreciate in 2023 365 No. of days to depreciate in 2024 366 No. of days to depreciate in 2025 365 No. of days to depreciate in 2026 365 No. of days to depreciate in 2027 (Ends at May) 151 TOTAL DAYS
5478 Depreciation per day $153.57

Based on the above, I have calculated the depreciation for 2012 (depreciation start date is 01.06.2012) should be $153.57 x 214 days = $32,864.09.

However, SAP calculated $32,792.26.

What could be the reason for the difference? Is there a configuration in the Depreciation Key that I should be aware of?