Date format and DateTime format

Date format in Apex

1.Use Date format method

2.Convert to String directly

3.Convert to DateTime

DateTime format in Apex

Date format in VF

DateTime format in VF

Date format in Formula

DateTime format in Formula

TZoffset is the　difference between the user’s time zone and GMT。
When in Tokyo：TZoffset = “9/24”
Reference : https://help.salesforce.com/help/pdfs/en/formula_date_time_tipsheet.pdf