ymdh to wind day Converter
The following tools can be found in the HYCOM source distribution.
The MT value is days since 1900-12-31 00:00:00, which is also the HYCOM model day or NRL wind day, so you can use hycom_ymdh_wind to find MT.
c input: yyyy mm dd hh (calendar/model year, month, day, and hour)
c output: the HYCOM model day and yrflag(=3)
c --- wday = wind day since 01/01/1901
c --- yrflag = days in year flag (3=actual)
ajax 100> echo 2012 02 01 00 | hycom_ymdh_wind