The blood donation calculate the earliest possible date for the next donation.

Blood donation is a process by which a blood donor voluntarily has blood drawn for storage in a blood bank for subsequent use in a blood transfusion.

The process of giving blood involves screening the donor, the actual donation, and a brief recovery period.

The blood donation calculator computes the earliest possible date for the next donation, after entering the last blood donation dates.

1) Donors aged 16 to 17 can donate two times in a year, with an interval of no less than 150 days between two consecutive donations

2) Female donors aged 18 or above can donate three times in a year, with an interval of no less than 105 days between consecutive two donations

3) Male donors aged 18 or above can give four times in a year, with an interval of no less than 75 days between consecutive two donations.