docs: update important dates and correct scheduling for March & April 2026

Important-Dates.md

@@ -6,17 +6,17 @@
 
 ### Next Meetup
 
-- **December Meetup: December 10th, 2025**
-  - Challenge announcement for December 2025 challenge
-  - Judging of November 2025 challenge submissions
+- **March Meetup: March 18th, 2026**
+  - Challenge announcement for March 2026 Challenge ("Bring an Experiment")
+  - Judging of February 2026 Challenge ("Bring Your Best")
 
-### Special Note
-
-**December meetup is NOT on the usual 3rd Wednesday** - We will resume normal 3rd Wednesday schedule starting January 2026.
+- **April Meetup: April 15th, 2026**
+  - Special Topic and activities TBD
+  - Judging of March 2026 Challenge ("Bring an Experiment")
 
 ## Regular Meeting Schedule
 
-### Standard Schedule (Resumes January 2026)
+### Standard Schedule
 - **When**: 3rd Wednesday of each month
 - **Time**: 6:00 PM - 8:00 PM
 - **Duration**: 2 hours
@@ -30,29 +30,19 @@
 
 ## Challenge Timeline
 
-### October 2025: "Is it Glass or Clearly Natural?" (Completed)
+### February 2026: "Bring Your Best"
 
-- **Challenge Announcement**: October 1, 2025
-- **Model Specification Released**: October 13, 2025
-- **Submission Deadline**: October 28, 2025
-- **Judging Period**: October 29-30, 2025
-- **Winner Announcement**: October 31, 2025
-
-See the [Challenge Archive](Challenge-Archive) for complete details.
-
-### November 2025: "Wait, This Was Printed? How Are There No Layer Lines?"
-
-- **Challenge Announcement**: November 12, 2025
-- **Submission Deadline**: December 10, 2025
-- **Judging**: December 10, 2025 meetup
+- **Challenge Announcement**: February 18, 2026
+- **Submission Deadline**: March 18, 2026
+- **Judging**: March 18, 2026 meetup
 
 See [Current Challenge](Current-Challenge) for complete details.
 
-### December 2025: [Challenge TBD]
+### March 2026: "Bring an Experiment"
 
-- **Challenge Announcement**: December 10, 2025
-- **Submission Deadline**: January 2026 meetup
-- **Details**: To be announced
+- **Challenge Announcement**: March 18, 2026
+- **Submission Deadline**: April 15, 2026
+- **Judging**: April 15, 2026 meetup
 
 See [Upcoming Challenge](Upcoming-Challenge) for updates.