If you want to have a calendar application that show 12 month in one screen the Year View calendar can do.

Year View is an android mobile application that display 12 month of the year in one screen.
With the smooth swipe left/right you can move to last year and next year easily.

★★★★★ Month Calendar Widget
★★★★★ Display 12 month in one screen
★★★★★ 115 Years display support (year 1921 to 2036)
★★★★★ Multi-language Month Name support
★★★★★ Display current day in green box
★★★★★ Support swipe left/right to change the year
★★★★★ Countdown left day information at the end of the year
★★★★★ Show date information (Valentine's day Christmas day)
★★★★★ English Russian and Thai language support

Note.
This software does not support the android small device (not support screen 2.7in and 3.2in)

Version 1.3
- Month Calendar Widget
- Adjust application icon
- Adjust position of date description

Version 1.2
- Multi-language Month Name support
- Adjust the color of box in current date

Version 1.1
- Countdown left day information at the end of the year
- Show date information (Valentine's day Christmas day)

Version 1.0
- Display 12 month in one screen
- Display current day in green box
- Support swipe left/right to change the year