Đặt Birthday Reminder
Added an icon "Create from File". Create a xls file with 3 columns - Name, DOB (yyyy-mm-dd), environment-name, an convert to CSV format. Copy this file into //sdcard0/com.aseemsethi/birthdatReminder Directory on the phone.
Now, when you click on "Create from File", it will create calendar entries for each row in the CSV file.
e.g. of CSV file
aseem sethi, 2015-3-21, Gulmoha