*Last updated: 2023-03-16.*

# Module: tf_quant_finance.datetime.utils

View source Utilities for working with dates. ## Functions [`days_in_leap_and_nonleap_years_between(...)`](../../tf_quant_finance/datetime/utils/days_in_leap_and_nonleap_years_between.md): Calculates number of days that fall on leap and non-leap years. [`days_in_leap_years_between(...)`](../../tf_quant_finance/datetime/utils/days_in_leap_years_between.md): Calculates number of days between two dates that fall on leap years. [`is_leap_year(...)`](../../tf_quant_finance/datetime/utils/is_leap_year.md): Calculates whether years are leap years. [`leap_days_between(...)`](../../tf_quant_finance/datetime/utils/leap_days_between.md): Calculates number of leap days (29 Feb) between two dates. [`ordinal_to_year_month_day(...)`](../../tf_quant_finance/datetime/utils/ordinal_to_year_month_day.md): Calculates years, months and dates Tensor given ordinals Tensor. [`year_month_day_to_ordinal(...)`](../../tf_quant_finance/datetime/utils/year_month_day_to_ordinal.md): Calculates ordinals Tensor given years, months and dates.