*Last updated: 2023-03-16.*
# tf_quant_finance.datetime.BusinessDayConvention
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Conventions that determine how to roll dates that fall on holidays.
* `NONE`: No adjustment
* `FOLLOWING`: Choose the first business day after the given holiday.
* `MODIFIED_FOLLOWING`: Choose the first business day after the given holiday
unless that day falls in the next calendar month, in which case choose the
first business day before the holiday.
* `PRECEDING`: Choose the first business day before the given holiday.
* `MODIFIED_PRECEDING`: Choose the first business day before the given holiday
unless that day falls in the previous calendar month, in which case choose the
first business day after the holiday.
## Class Variables
* `FOLLOWING`
* `MODIFIED_FOLLOWING`
* `MODIFIED_PRECEDING`
* `NONE`
* `PRECEDING`