This calculates the years between two dates using the actual/365 (fixed) day basis convention. This convention counts the number of calendars between the start and end dates and assumes a year consists of 365 days. This is also known as the Act/365 fixed, A/365 fixed, A/365F and English day basis convention.

actual_365(date1, date2)

date1 | A date-time object |
---|---|

date2 | A date-time object |

a numeric value representing the number of years between
`date1`

and `date2`

.

The year fraction is calculated as: $$\frac{Number of calendar days}{365}$$

The order of `date1`

and `date2`

is not important. If `date1`

is less than `date2`

then the result will be non-negative. Otherwise,
the result will be negative.

Other counter methods: `actual_360`

,
`actual_actual_isda`

,
`is_valid_day_basis`

,
`thirty_360_eu_isda`

,
`thirty_360_eu_plus`

,
`thirty_360_eu`

, `thirty_360_us`

,
`thirty_360`

, `year_frac`