| Description: In order to calculate a new date and time given a base date, base time and a time increment one must know what calendar to use. For this purpose we recommend that the calendar be specified by the attribute calendar which is assigned to the time coordinate variable. |
| Namespace Id: ama | Steward: atm | Class Name: Coordinate | Type: ASCII_Short_String_Collapsed |
| Minimum Value: None | Maximum Value: None | Minimum Characters: 1 | Maximum Characters: 255 |
| Unit of Measure Type: None | Default Unit Id: None | Attribute Concept: None | Conceptual Domain: SHORT_STRING |
| Status: Active | Nillable: false | Pattern: None |
| Permissible Value(s) | Value | Value Meaning |
| | 360_Day | All years are 360 days divided into 30 day months. |
| | 365_Day | Gregorian calendar without leap years, i.e., all years are 365 days long. (Same as Noleap.) |
| | 366_Day | Gregorian calendar with every year being a leap year, i.e., all years are 366 days long. (Same as All_Leap.) |
| | All_Leap | Gregorian calendar with every year being a leap year, i.e., all years are 366 days long. (Same as 366_Day.) |
| | Gregorian | Mixed Gregorian/Julian calendar as defined by Udunits. This is the default. (Same as Standard.) |
| | Julian | Julian calendar. |
| | Noleap | Gregorian calendar without leap years, i.e., all years are 365 days long. (Same as 365_Day.) |
| | None | No calendar. |
| | Proleptic_Gregorian | A Gregorian calendar extended to dates before 1582-10-15. That is, a year is a leap year if either (i) it is divisible by 4 but not by 100 or (ii) it is divisible by 400. |
| | Standard | Mixed Gregorian/Julian calendar as defined by Udunits. This is the default. (Same as Gregorian.) |