Here’s another version of your announcement:
Attention, Quiz Enthusiasts!
The Greytribe Quiz is back with a brand-new season, and it’s time to test your wits and win amazing rewards! 
When? This Monday, 9th Dec - 13th Dec
What Time? Join us sharp at 10 AM
What’s in it for you? Exciting prizes and bragging rights await the champions!
Link to join - [Greytribe Quiz 3.0] Season 10 :: Contest no 135 🎁
Don’t miss out on the action! Get ready to challenge yourself, climb the leaderboard, and take home some fantastic rewards.
Mark your calendars, and let’s make this season epic! 
greytribequiz #ChallengeAccepted #WinBig
Community Manager.