【Day Calculator】
1. Quickly calculate the difference between two dates.
2. Calculate End Date based on the given Period and Starting Date.
3. Allow free setting of [both days inclusive] and [exclude first day]
【Day Calculator】
1. Quickly calculate the difference between two dates.
2. Calculate End Date based on the given Period and Starting Date.
3. Allow free setting of [both days inclusive] and [exclude first day]