How do you make it become night

[Viper]

Since somethings can only be done at night

[Tim Timsen]

Enter map screen, check buttons at the bottom right, one of them says "Wait".

[Tachyon]

Open map, press F, then spacebar to cycle day/night.

[Dr.Abscondus]

Open the map. Click on 'Wait' at the bottom, and time will switch.

[Megalithik]

Open the map read the options, one of them will be to change day to night.

[Viper]

Thank you very much...