the format currently used is "YYYY-MM-DD". The format property would make possible the inputs have the formats:
- "YYYY-MM-DD"
- "YYYY-DD-MM"
- "MM-DD-YYYY"
- "MM-YYYY-DD"
- "DD-MM-YYYY"
- "DD-YYYY-MM"
- "YYYY/MM/DD"
- "YYYY/DD/MM"
- "MM/DD/YYYY"
- "MM/YYYY/DD"
- "DD/MM/YYYY"
- "DD/YYYY/MM"