HANA Time change

Hi

Our HANA DB is set to use UTC time zone, i know by editing .sapenv.sh & sapenv.csh files in the $HOME directory, i can reset the time zone to Eastern Time. I am confused with 'America/New York' and 'EST5EDT' timezones. If i choose 'America/New York' as my time zone, does my HANA application recognizes the time change and sets it automatically ? What is EST5EDT ?

Thanks

Arun