In, on, at

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In, on, at

At

Events -At the party -At the concert

"Next" to an object -At the door -At the window -At the statue

For "weekend" -At the weekend

For "night" -At night

On

Media -On TV -On the radio

Objects "over" -On the table -On the desk

Days of the week -On monday -On saturday

In

Place

Room/Building/Street/City/Country -In the kitchen -In the hospital -In Praga Street -In Torreon -In France

Time

After a period (when?) -In an hour -In a month -In 2 days

Times of the day -In the morning -In the night -In the afternoon

Months/Seasons/Years -In January -In winter -In 2014