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Filter a collection by date range. The start and end may be Dates, numbers

(interpreted as milliseconds since 1970-01-01T00:00:00Z), or strings (such as '1996-01-01T08:00'). Based on 'system:time_start' property.

Returns the constructed filter.

UsageReturns, end)Filter
startDate|Number|StringThe start date (inclusive).
endDate|Number|String, optionalThe end date (exclusive). Optional. If not specified, a 1-millisecond range starting at 'start' is created.


Code Editor (JavaScript)

// Constructed FeatureCollection representing a field site sampled at
// four different dates.
var geom = ee.Geometry.Point([-119.56, 37.67]);
var fc = ee.FeatureCollection([
  ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-06-10')}),
  ee.Feature(geom, {'prop': 11, 'system:time_start': ee.Date('2021-06-20')}),
  ee.Feature(geom, {'prop': 19, 'system:time_start': ee.Date('2021-07-10')}),
  ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-07-20')})

// Filter the observations in July 2021.
print('Field site observations collection in July 2021',
      fc.filter('2021-07-01', '2021-08-01')));

// Alternative input formats.
print('ee.DateRange as an input',
      fc.filter('2021-07-01', '2021-08-01'))));

print('Numbers (milliseconds since Unix epoch) as an input',
      fc.filter(, 1626739200001)));

print('ee.Date objects as an input',
      fc.filter('2021-07-01'), ee.Date('2021-08-01'))));