Add logic to remove timetable dates when the current date is before the start date

Author: liamjberrisford

cfrr_program_details/courses_overview.ipynb

@@ -10,7 +10,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 13,
    "id": "d3aa7606-0f50-4f05-b104-ad4521c80406",
    "metadata": {
     "editable": true,
@@ -25,9 +25,8 @@
     {
      "data": {
       "text/markdown": [
-       "- Python for Data Analysis: 29th November/6th December 10am-1pm (In-person only) - [MS Form Signup](https://forms.office.com/e/ChUMbgntbr)\n",
-       "- Regression Analysis with R: 25th October 10am-1pm (online only) - [MS Form Signup](https://forms.office.com/Pages/ResponsePage.aspx?id=d10qkZj77k6vMhM02PBKU-3R4SvRoClNrKjEX5qG1X1UMU1KRUpEOFRJQjFEOVVUVzFDMTRQMFZLRi4u)\n",
-       "- Working with Data in R: 18th/25th November 1-4pm (online only) - [MS Form Signup](https://forms.office.com/e/zi5g1uP5sB)"
+       "- Introduction to Python: 17th/24th January 2025 10am-1pm (In-person only) - [MS Form Signup](https://forms.office.com/e/YAxvuE5dG5)\n",
+       "- Python for Data Analysis: 6th/13th February 2025 1-4pm (Online only) - [MS Form Signup](https://forms.office.com/e/rJRBxYnxKA)"
       ],
       "text/plain": [
        "<IPython.core.display.Markdown object>"
@@ -51,13 +50,16 @@
     "\n",
     "# Convert the 'End Date' column to datetime (assuming the date format is day-first)\n",
     "courses_df['End Date'] = pd.to_datetime(courses_df['End Date'], dayfirst=True, errors='coerce')\n",
+    "courses_df['Start Date'] = pd.to_datetime(courses_df['Start Date'], dayfirst=True, errors='coerce')\n",
     "\n",
     "# Get today's date\n",
     "today = datetime.now()\n",
     "\n",
     "# Filter for rows that contain valid MS Form Signup links, Course Date information, and check if the 'End Date' is still valid\n",
     "filtered_courses_df = courses_df.dropna(subset=['Course Date', 'MS Form Signup'])\n",
     "filtered_courses_df = filtered_courses_df[filtered_courses_df['End Date'] > today]\n",
+    "filtered_courses_df = filtered_courses_df[filtered_courses_df['Start Date'] <= today]\n",
+    "\n",
     "\n",
     "# Function to generate markdown text based on course details\n",
     "def generate_markdown(row):\n",