Passer/se passer/se passer de - the different meanings of the verb "passer" in French

The verb passer in French has a variety of meanings, as diverse as to happen, to do without or simply to pass (by)... 

The different meanings of passer in French

ATTENTION: it never means to pass (succeed) an exam.
See Differences between French and English usages - Passer un exam vs To pass an exam

Here are its main usages: 

Passer [quelque chose/quelqu'un]  
to pass [something/someone] on

First of all, the easy one: passer + thing/person simply means to pass something/someone (on).

Passer par / devant ...   (to pass by / in front of...)

Again here, easy: passer (par, devant...) + a location simply means to pass (by, in front of...) somewhere.

Passer + time   (to have + time / to spend + time)

In English, you will use to have to talk about a good time, such as Have a good day! or I had a good evening. In these cases, you will use passer in French:

You will also use passer + duration to express to spend (time):

Se passer   (to happen / take place / to go [event])

To ask How did this event go?, you will use event + (reflexive) se passer:

You can also use thing + se passer to express [this] happens / takes place:

Se passer de    (to do without)

And finally, to say that you can do / go without [something/someone], you will use the reflexive form se passer de + thing/person: