September 2026 |
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| Release Dates: September 26th 2026 - September 29th 2026 The thirty-nineth Pokémon Sleep Good Sleep Day event is the first in Autumn and featured a 2x boost for the middle of the event |
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| Anchors | Effects | Boxes |
Event Effects
| Effect | Type |
| Drowsy Power Calculation |
x1.5 - September 26th/September 28th x2 - September 27th |
| Pokémon Sleep Experience |
x2 - September 26th/September 28th x3 - September 27th |
| Bonus Sleep Points |
+500 - September 26th/September 28th +1000 - September 27th |
| Pokémon with Sleep Styles not yet registered | More Likely |
Spawn Boosts in Event
| No. | Pic | Name | Type | Sleep Style | Speciality | Chance | |
| #0173 |
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Cleffa |  Fairy |
Slumbering | Berries | Greater | |
| #0035 |
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Clefairy | Fairy |
Snoozing | Berries | Greater | |
| #0036 |
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Clefable | Fairy |
Snoozing | Berries | Greater |
Event Item Boxes
| Good Sleep Day Bundle | |||||||||||||||
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 1500 Diamonds | |||||||||||||||
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