に (ni) particle

1) to indicate the goal of a movement

goal に movement = goal of movement

Examples:
たけしさんは銀行に行きます。(Takeshi-san wa ginkou ni ikimasu.)
 Takeshi will go to the bank.

私は今月国に帰りません。(Watashi wa kongetsu kuni ni kaerimasen.)
 I will not go back to my home country this month.

2) to indicate the time at which an event takes place

time に event = time an event happen

Examples:
曜日にチャーチに行きます。(nichi-youbi ni Chaachi ni ikimasu.)
 I will go to Church this Sunday.

ごご十一時に終わります。(gogo juuichi-ji ni owarimasu.)
 It will end at 11PM.

Note: For approximation of time reference, subsitute に (ni) with ごろ (goro) or ごろに (goro ni)

ごご十一時ごろに終わります。(gogo juuichi-ji goro ni owarimasu.)
 It will end around 11PM.

Note: there are several restrictions in using に as a time reference, which we will investigate in later chapters.