Can I spawn bosses during the day?

[Pkms]

I'm a noob, so I need an answer if you got it, please.

[gusty]

some can some cant

[TauTauri]

most you have to spawn at night

[Ill Queen Hydra]

Depends on the boss.

[Yvanoff]

only Eye of Cthulhu, Skeletron and the 3 Mechanical bosses need to be fought at night (they'll flee/become nearly invincible if fight last till dawn)
others you can fight whenever you want (though most of them you can't fight wherever you want)
for stuff like that check the wiki: http://terraria.gamepedia.com/Terraria_Wiki

[Chilled Nomi]

Depends on Boss, like said in post above me here those ones are night time only.

Others like Eater of Worlds and Brain of Cthulhu can only be summoned in specific biomes but at any time of the day (Corruption for Eater, Crimson for Brain). If need be you can artificially make a biome with Corrupt seeds or Crimson seeds to fight the one youre world wouldnt be able to fight otherwise.

Golem can be fought anytime anywhere if you have the supplies to summon him.

[timesto]

idk

[Air]

Nah

[TheDreamBirds]

only moon lord king slime plantera golem duke fishron queen bee and wall of flesh and all the events if you count those as bosses actually correction 2 events can be night only aka frost moon and pumpkin moon

[E3kHatena]

Eye of Cthulhu, Skeletron, and the mechanical bosses, as well as any enemies from a Moon Event (pumpkin moon, etc.) events can only be fought at night. Eater of Worlds has to be fought in the Corruption, Plantera underground jungle and Fishron at the ocean.

[Yvanoff]

Originally posted by E3kHatena:

Eye of Cthulhu, Skeletron, and the mechanical bosses, as well as any enemies from a Moon Event (pumpkin moon, etc.) events can only be fought at night. Eater of Worlds has to be fought in the Corruption, Plantera underground jungle and Fishron at the ocean.

hum actually you can fight Plantera and Fishron outside their biomes. However if you do that you're in for a good surprise ^^

[Xiarn]

Originally posted by Linux_Forever (Yvanoff):

Originally posted by E3kHatena:

Eye of Cthulhu, Skeletron, and the mechanical bosses, as well as any enemies from a Moon Event (pumpkin moon, etc.) events can only be fought at night. Eater of Worlds has to be fought in the Corruption, Plantera underground jungle and Fishron at the ocean.

hum actually you can fight Plantera and Fishron outside their biomes. However if you do that you're in for a good surprise ^^

Yeah, back when Plantera was introduced this killed me quite a few times until I figured out what was happening.