Solution : https://service.sap.com/sap/support/notes/919536 (SAP Service marketplace login required)
Key words :
img activity 'general settings -> time zones -> time zones basic customizing, call transaction stzbc - time zones view, usa daylight saving time rule, daylight saving time rule, daylight saving time usa, daylight saving time change, estno time zone, time zone est, est time zone, estno time zone 3
Related Notes :
198411 | Current data and information about time zones |