# Calendars

Molecule supports a number of business day (and other holiday) calendars, in-app and via our API. Under the hood, we use the open-source Ruby [holidays](https://github.com/holidays/definitions/tree/905c80540c00929bbf6658673d303089c688e7e7) gem, so any calendar in that list is available in-app, in calendar fields (such as Agreements and Products).

In addition, we've added the following calendars that haven't yet been added to the open-source project. In-app codes are listed in `code formatting`.

* CME (`cme`)
* Dalian Commodity Exchange (`dce`)
* ICE (`ice`)
* ICE Agricultural (`ice_agri`)
* ICE LIBOR (`ice_libor`)
* ICE UK (`ice_uk`)
* LBMA Morning (`lbma_am`)
* LBMA Afternoon (`lbme_pm`)
* LME (`lme`)
* PJM (`pjm`)