Reading the guidelines, we see that to receive the medals:

- Partecipants of a First Saturday Event have to check-in with locals organizers and also hack a specific portal;

- Partecipants of a Mission Day Event have to register themselves in the official Niantic site and also have to do a check-in with local POCs to show the completed missions. Note that Niantic does not allow email check-in anymore.

We also read that Tiers of #FirstSaturday medal are: Bronze 1, Silver 6, Gold 12, Platinum 24, Onyx 36. We still don't know if it is retroactive or not. If not, a player needs at least 3 years to reach Onyx level

@IUENG

Niantic announced double AP for future #FirstSaturday Events! Find one near you at intel.ingress.com/events and help Agents get along with the community!

@IUENG

The Ingress community of Valencia, Spain is inviting you to their Ingress #FirstSaturday Event on December the 1st! Sign up and help the X-Faction community become a better place!

Registration form
G+ Event
Meetup Portal Intel link

Source: @kalvorota

@IUENG

Double Event in Belgium on December 1st!
The city of Kortrijk will host an Ingress #FirstSaturday, first chance to earn the all-new FS Badge in the country!
Brussels, more specifically the Meltdown, will be hosting an Agent-organised Ingress Prime party, where you will be able to discover in detail all of the new Prime features, win swag goodies and enjoy some special cocktails! Awesome initiative!

Useful Links
Kortrijk FS Google+ Event
Kortrijk FS Reg Form
Brussels Prime Party (Facebook)

Source: @nomadAndrea

@IUENG

Agents are reporting from the Ingress First Saturdays!

On the top row, the Group Photo and one of the prizes at the Colombo, Sri Lanka Event!
Ph: @CastialSL

Below, #FirstSaturday in Gliwice, Poland and the output from the restock portal!
Ph: @0rant and @BeeSeL

@IUENG

Moar Ingress #FirstSaturday Pictures!

Top left: the group picture from Montreal! Thanks @ENL_2Floyd
Top right: group picture from Bengaluru, India! Thanks @VibeeshBalan
Bottom left: group picture from the IFS and Mission Day in Quito, Ecuador! Thanks @sabotaje77

@IUENG

Ingress #FirstSaturday Pictures!

Top: group picture in Recife, Pernambuco, Brazil! Thanks @Suburbanno
Middle: 160 players in St. Petersburg, Russia! Thanks @NikaKor
Bottom: group picture in Sao Luis, Maranhão, Brazil! Thanks @FlashPegasus

@IUENG

Ingress #FirstSaturday Pictures!

Top: group picture in Belmonte, Portugal! Thanks @Falballa_azores
Bottom: players from Trujillo, Perú. South America! Thanks @RICAPUNTOPE

@IUENG

Ingress #FirstSaturday Pictures!

Top: group picture in Lviv, Ukraine! Thanks @MariLV
Middle: group picture in Zhovkva, Ukraine! Thanks @Lemyr4iik
Bottom-left: players in Surgut, Russia! Thanks @NikaKor
Bottom-right: players in Split, Croatia! Thanks @lupukapa

@IUENG

Ingress #FirstSaturday Pictures!

Top: group picture in Ankara, Turkey! Thanks @Buket3520
Bottom: group picture in Reus, Catalonia! Thanks @abstractpainter

@IUENG

Ingress #FirstSaturday Pictures!

Top: group picture in Bothell, WA! One flew there from Texas! Thanks @BigMatty
Bottom: group picture in Rio de Janeiro, Brasil! Thanks @PauloGabriell

@IUENG

Ingress #FirstSaturday Pictures!

Top: group picture in Bucharest, Romania! Thanks @Slackware
Bottom-left: players in Costa Rica! Thanks @ThePixelCat
Bottom-right: players in Puebla, Mexico! Thanks @MrChics

@IUENG

Ingress #FirstSaturday Pictures!

Here we have in order: Mariupol, Zaporizhzhia, Irpin, Kharkiv, Odessa, Vyshneve, Dnipro, Chornomorsk, and last but not least Kherson, all cities in Ukraine!
Thanks @Kykara4a!

@IUENG

The last Ingress #FirstSaturday Pictures! (Sorry guys, it is late here, we need to sleep)

Here the group pictures (not in order) in:

- Kaliningrad, Russia! Thanks @TorstonRus
- Coimbatore, India! Thanks @VibeeshBalan
- Greenville, CS, USA! Thanks @SCLori
- Merida, Mexico! Thanks @DidierD
- Chennai, India! Thanks @VibeeshBalan
- Brasilia, Brasil! Thanks @propan1ol
- Grapevine, TX, USA! Thanks @PtahMakto
- Ahmedabad, India! Thanks @VibeeshBalan

Thank you for sharing these photos, see you at the next event!

@IUENG

Agent @dedo1911 created a handy auto-updating map of all the Ingress #FirstSaturday Events that will happen on the globe! Check out which one is the closest to you and consider participating to help your community grow!

You can find the map at this link!

The map is in constant development!

@IUENG

Agent @NikaKor reports that Niantic is sending out the emails with details about the Ingress #FirstSaturday 2x AP Bonuses! This one is from the St. Petersburg Event in Russia!

Ph: @sobaaken

@IUENG

The Ingress Community of Edinburgh, Scotland is hosting an Ingress #FirstSaturday on March 2nd! Join them for a day of fun, challenges and community building!

Meeting Point and Restocking Portal: Giraffes Omni Centre
Intel Link // Google Maps

RSVP Link

@IUENG

The Lithuanian ingress community invites you to the Ingress #FirstSaturday in Birstonas on March 2nd. Visit this beautiful town studded with parks as well as several places to enjoy water treatments, pools and saunas.

Telegram chat for more info and fun

Official RSVP

Res POC: @Erylicious
Enl POC: @MrNothing92

@IUENG

Agents @Chicken3gg and @strickerspl reports that the Ingress #FirstSaturday Badge points for March have been pushed and the E-Mail regarding Bonus AP is arriving in your inboxes! Check your scanners!

@IUENG

Ingress #FirstSaturday Badges for the Events in June are being pushed to your scanners!

Thanks @Dremosdur!

@IUENG