One of the greatest features of Gold and Silver were the daily and weekly events. These could be performed more or less every few days and brought a new sense of realism to the games.

Daily Events

Swarms

Location: Various

Details:
Any day, if you lhave certain people registered in your phone on the PokéGear, you will learn of a Pokémon swarm somewhere in Johto. These Pokémon are usually incredibly rare or non-existant within the locales so this is a perfect way to obtain them. The Pokémon are as follows:

PokémonLocation
#183 MarillMt. MortarHiker Parry
#193 YanmaRoute 35Bug Catcher Arnie
#206 DunsparceDark CaveHiker Anthony
#209 SnubbullRoute 38Schoolboy Chad
#211 QwilfishRoute 32Fisher Ralph
#223 RemoraidRoute 44Fisher Wilton
Goldenrod Radio Tower Lottery

Location: Various

Details:
Reid does a daily radio lottery at the Goldenrod Radio Tower. By tuning into the Lucky Number Show, you'll find out what those numbers are. This lottery provides 5 numbers and you need to have any of your Pokémon's IDs match up to the numbers in order to win. The more numbers matched, the better the prize. The top prize is a Master Ball, so play often.

Goldenrod Underground

Location: Goldenrod Underground

Details:
The Goldenrod Underground is a unique shopping mall underneath the main city. Many rare and exotic items can be bought here, and services are available you can't find in a normal Pokemart. They are as follows:

Bargain Shop: Monday Mornings
Hairdresser - Older Brother: Tuesday, Thursday, Saturday
Hairdresser - Younger Brother: Sunday, Wednesday, Friday
Herb Shop: Saturday, Sunday

Repeat Events

Bug Catching Contest

Location: National Park
Days: Tuesday, Thursday, Saturday

Details:
On Tuesdays, Thursdays and Saturdays, the National Park hosts the Bug Catching Contest. In the contest, you'll be given a set of Park Balls and the chance to catch rare Bug-type Pokemon for a shot at the grand prize. For more details, click here.

SS Aqua

Location: Olivine City
Days:
Wednesday/Sunday (Vermillion to Olivine)
Monday/Friday (Olivine to Vermillion)

Details:
Once you have the S.S. Ticket and have already been to Kanto, you'll be able to make return trips between Johto & Kanto twice a week from each port. The trip to Kanto and the trip to Johto both have a different batch of trainers on board.

Rival Rematch

Location: Indigo Plateau
Days:
Monday & Wednesday

Details:
Every Monday and Wednesday after you've defeated the Elite Four, your Rival appears at the Indigo Plateau to have a rematch. It's good training.

Rival Sneasel Crobat Magneton Gengar Alakazam Meganium
Battle Type
Single Battle
Items
Level 48 Level 45 Level 48 Level 46 Level 46 Level 50
Attacks:
Quick Attack
Screech
Faint Attack
Fury Cutter
Attacks:
Toxic
Bite
Confuse Ray
Wing Attack
Attacks:
Thunder
SonicBoom
Thunder Wave
Swift
Attacks:
Mean Look
Curse
Shadow Ball
Confuse Ray
Attacks:
Recover
Future Sight
Psychic
Reflect
Attacks:
Giga Drain
Body Slam
Light Screen
Safeguard
Totodile Chosen
Rival Sneasel Crobat Magneton Gengar Alakazam Typhlosion
Battle Type
Single Battle
Items
Level 48 Level 45 Level 48 Level 46 Level 46 Level 50
Attacks:
Quick Attack
Screech
Faint Attack
Fury Cutter
Attacks:
Toxic
Bite
Confuse Ray
Wing Attack
Attacks:
Thunder
SonicBoom
Thunder Wave
Swift
Attacks:
Mean Look
Curse
Shadow Ball
Confuse Ray
Attacks:
Recover
Future Sight
Psychic
Reflect
Attacks:
Smokescreen
Quick Attack
Flame Wheel
Swift
Chikorita Chosen
Rival Sneasel Crobat Magneton Gengar Alakazam Feraligatr
Battle Type
Single Battle
Items
Level 48 Level 45 Level 48 Level 46 Level 46 Level 50
Attacks:
Quick Attack
Screech
Faint Attack
Fury Cutter
Attacks:
Toxic
Bite
Confuse Ray
Wing Attack
Attacks:
Thunder
SonicBoom
Thunder Wave
Swift
Attacks:
Mean Look
Curse
Shadow Ball
Confuse Ray
Attacks:
Recover
Future Sight
Psychic
Reflect
Attacks:
Surf
Rain Dance
Slash
Screech
Cyndaquil Chosen

Weekly Events

Lapras

Location: Union Cave
Days: Friday

Details:
Every Friday, you'll be able to find Lapras swimming in the Union Cave's basement. Even if you catch it the previous week, another will appear the Friday afterwards. You need Surf to reach the Lapras so you can't get it until after you beat Morty.

Lapras
Level 20
OT:Yours
ID:Yours
Hold Item:
None
Growl
Slam
Mist
Body Slam
Clefairy Dance

Location: Mt. Moon
Days: Monday

Details:
Every Monday night at Mt. Moon's summit you'll find a group of Clefairy dancing in the moonlight. After observing the dance for a while, they'll spot you and flee. Smash the rock they're parading around to get a Moon Stone.

Day of the Week Siblings

Location: Various
Days: Every Day

Details:
These siblings appear once a week in special locations, waiting to give you a unique attack boosting item. Their names are all fairly obvious puns. Make sure to meet them all to boost your Pokemon's moves!

DayPersonItemLocation
MondayMonicaSharp BeakRoute 40
TuesdayTuscanyPink BowRoute 29
WednesdayWesleyBlack BeltLake of Rage
ThursdayArthurHard StoneRoute 36
FridayFriedaPoison BarbRoute 32
SaturdaySantosSpell TagBlackthorn City
SundaySunnyMagnetRoute 37