Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Rank | Area | Date | Presenter | Seven wonders covered |
| --- | --- | --- | --- | --- |
| 1 | South West | 3 May | Samantha Smith | Dartmoor, Jurassic Coast, St Michael's Mount, Exmoor, Isles of Scilly, The Lizard, Newquay Coast |
| 2 | Yorkshire & Lincolnshire | 9 May | Paul Hudson | Malham Cove, the Three Peaks, Flamborough Head, Hornsea Mere, The Wash, Thorne and Hatfield Moors, Spurn Head |
| 3 | London | 16 May | Bill Oddie | Islands in the River Thames, the London Plane, City Gardens, Hampstead Heath, London Wetland Centre, Epping Forest, Chislehurst Caves. |
| 4 | The North | 23 May | Chris Jackson | Lake District, River Wear, Whin Sill, Aysgarth Falls, River Tees, Holy Island, Morecambe Bay |
| 5 | The South | 30 May | Aubrey Manning | The Needles, Lulworth Cove, Devil's Punch Bowl, The Ridgeway, Stokenchurch Gap, Finchampstead Ridges, Cuckmere Haven |
| 6 | The Midlands | 6 June | Dominic Heale | Kinder Scout, Dovedale, Blue John Cavern, Creswell Crags, Sherwood Forest, Beacon Hill, Wenlock Edge |
| 7 | The West Country | 17 June | Amanda Parr | Avebury, Symonds Yat, Cheddar Gorge, Bath Hot Springs, River Severn, Glastonbury Tor, Exmoor |
| 8 | South East | 22 June | Kaddy Lee-Preston | White Cliffs of Dover, Seven Sisters, North Downs, Dungeness, Romney Marsh, Ecclesbourne Glen, Pegwell Bay |
Question:
how many days are between the first and last program dates?
Answer:
50