We recommend that date-time information in granule file names adheres to the following guidelines:
The recommended date-time formats are:
YYYYMMDDThhmmss[,.]f+Z
YYYYMMDDThhmmssZ
YYYYMMDDThhmmZ
YYYYMMDDThhZ
YYYYMMDD
YYYY-MM
YYYY
Where:
Y
is a digit used in the time element “year”M
is a digit used in the time element “month”D
is a digit used in the time element “day”T
is the separator between the date and time partsh
is a digit used in the time element “hour”m
is a digit used in the time element “minute”s
is a digit used in the time element “second”[,.]
the decimal mark – either the comma or the full stop.f
is a digit used in the decimal fraction of a second+
means "one or more digits"Z
is UTC time zone designatorRecommendation Details: It is commonplace to find date-time information in Earth Science granule file names; however, its formatting varies. ISO 8601 is an international standard for representing dates and times of the Gregorian calendar in many interoperable formats and with differing level of detail. The recommended formats imply: