# time.sim

| Field                                                                                                   | Description                      | Type    |
| ------------------------------------------------------------------------------------------------------- | -------------------------------- | ------- |
| [day\_start](https://swatplus.gitbook.io/io-docs/introduction-1/simulation-settings/time.sim/day_start) | Beginning day of the simulation  | integer |
| [yrc\_start](https://swatplus.gitbook.io/io-docs/introduction-1/simulation-settings/time.sim/yrc_start) | Beginning year of the simulation | integer |
| [day\_end](https://swatplus.gitbook.io/io-docs/introduction-1/simulation-settings/time.sim/day_end)     | Ending day of the simulation     | integer |
| [yrc\_end](https://swatplus.gitbook.io/io-docs/introduction-1/simulation-settings/time.sim/yrc_end)     | Ending year of the simulation    | integer |
| [step](https://swatplus.gitbook.io/io-docs/introduction-1/simulation-settings/time.sim/step)            | Time step of the simulation      | integer |