# days360
[](https://github.com/tfeldmann/days360/actions/workflows/tests.yml)
<a href="https://pypi.org/project/days360/">
<img src="https://img.shields.io/pypi/v/days360" title="PyPI Version">
</a>
Calculates the days between two dates based on the 360-day year.
- Implementation of Excel's (or Number's) `DAYS360` / `TAGE360` formula in python.
- Both EU and US methods of calculation are supported, with optional Excel bug compatibility.
## Installation
```
pip install days360
```
## Usage
```python
from datetime import date
from days360 import days360
date_a = date(2022, 10, 2)
date_b = date(2023, 11, 30)
# supported methods: "US" (default), "US_NASD", "EU"
days = days360(date_a, date_b, method="US")
print(days) # prints 418
```
## Planned
- ISDA, PSA and SIA methods
- https://www.isda.org/2008/12/22/30-360-day-count-conventions/)
- https://web.archive.org/web/20160425044113/http://www.nyift.com/lesson/day-count-convention-bonds/
- https://github.com/miradulo/isda_daycounters
## Notes and credits
- Implementations are based on https://en.wikipedia.org/wiki/360-day_calendar.
- This library started as a port of this ruby gem: https://github.com/tamaloa/days360/tree/master
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"description": "# days360\n\n[](https://github.com/tfeldmann/days360/actions/workflows/tests.yml)\n<a href=\"https://pypi.org/project/days360/\">\n <img src=\"https://img.shields.io/pypi/v/days360\" title=\"PyPI Version\">\n</a>\n\nCalculates the days between two dates based on the 360-day year.\n\n- Implementation of Excel's (or Number's) `DAYS360` / `TAGE360` formula in python.\n- Both EU and US methods of calculation are supported, with optional Excel bug compatibility.\n\n## Installation\n\n```\npip install days360\n```\n\n## Usage\n\n```python\nfrom datetime import date\nfrom days360 import days360\n\ndate_a = date(2022, 10, 2)\ndate_b = date(2023, 11, 30)\n\n# supported methods: \"US\" (default), \"US_NASD\", \"EU\"\ndays = days360(date_a, date_b, method=\"US\")\nprint(days) # prints 418\n```\n\n## Planned\n\n- ISDA, PSA and SIA methods\n - https://www.isda.org/2008/12/22/30-360-day-count-conventions/)\n - https://web.archive.org/web/20160425044113/http://www.nyift.com/lesson/day-count-convention-bonds/\n - https://github.com/miradulo/isda_daycounters\n\n## Notes and credits\n\n- Implementations are based on https://en.wikipedia.org/wiki/360-day_calendar.\n- This library started as a port of this ruby gem: https://github.com/tamaloa/days360/tree/master\n",
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