All date field values will be will be in Coordinated Universal time (UTC). They will have the following format: YYYY-MM-DDThh:mm:ss.sssZ,which is interpreted as follows:

YYYY = year

MM = month

DD = day of month

hh = hour (00 through 23)

mm = minute

ss = second

s = one or more digits representing a decimal fraction of a second

T denotes the beginning of the time element  

Z denotes that the time stamp is given in UTC 

Example: 1997-07-16T19:20:30.451Z