It's a common directional term used in the Philippines and other Filipino-speaking communities.
Here are some examples of how it can be used:
* "Ang araw sumisikat sa silangan." (The sun rises in the east.)
* "Ang bahay namin ay nasa silangan ng lungsod." (Our house is located east of the city.)
* "May mga magagandang tanawin sa silangan ng isla." (There are beautiful views east of the island.)
Note: "Silangan" can also be used metaphorically to refer to something that is new or emerging, similar to the way "the East" is sometimes used in English.