[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2023-10-06 UTC."],[[["\u003cp\u003e\u003ccode\u003eee.Filter.date\u003c/code\u003e filters a collection by date range based on the \u003ccode\u003esystem:time_start\u003c/code\u003e property.\u003c/p\u003e\n"],["\u003cp\u003eThe start and end dates can be specified as Dates, numbers (milliseconds since 1970-01-01T00:00:00Z), or strings (like 'YYYY-MM-DDTHH:mm').\u003c/p\u003e\n"],["\u003cp\u003eThe end date is exclusive, and if omitted, a 1-millisecond range starting at the start date is used.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eee.Filter.date\u003c/code\u003e returns a filter that can be applied to a collection using the \u003ccode\u003efilter\u003c/code\u003e method.\u003c/p\u003e\n"]]],["The core functionality is filtering a collection based on a date range, using the `system:time_start` property. The `ee.Filter.date(start, end)` method facilitates this, accepting `start` and optional `end` arguments as Dates, numbers (milliseconds since 1970), or strings (e.g., '1996-01-01'). If `end` is omitted, a 1-millisecond range is created. The method returns a filter, allowing users to filter collections. The code shows various ways of using this filter.\n"],null,["# ee.Filter.date\n\n\u003cbr /\u003e\n\nFilter a collection by date range. The start and end may be Dates, numbers\n\n\u003cbr /\u003e\n\n(interpreted as milliseconds since 1970-01-01T00:00:00Z), or strings (such as '1996-01-01T08:00'). Based on 'system:time_start' property.\n\nReturns the constructed filter.\n\n| Usage | Returns |\n|----------------------------------|---------|\n| `ee.Filter.date(start, `*end*`)` | Filter |\n\n| Argument | Type | Details |\n|----------|--------------------------------|-------------------------------------------------------------------------------------------------------------|\n| `start` | Date\\|Number\\|String | The start date (inclusive). |\n| `end` | Date\\|Number\\|String, optional | The end date (exclusive). Optional. If not specified, a 1-millisecond range starting at 'start' is created. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// collection.filterDate is preferred.\n// Constructed FeatureCollection representing a field site sampled at\n// four different dates.\nvar geom = ee.Geometry.Point([-119.56, 37.67]);\nvar fc = ee.FeatureCollection([\n ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-06-10')}),\n ee.Feature(geom, {'prop': 11, 'system:time_start': ee.Date('2021-06-20')}),\n ee.Feature(geom, {'prop': 19, 'system:time_start': ee.Date('2021-07-10')}),\n ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-07-20')})\n]);\n\n// Filter the observations in July 2021.\nprint('Field site observations collection in July 2021',\n fc.filter(ee.Filter.date('2021-07-01', '2021-08-01')));\n\n// Alternative input formats.\nvar dateRange = ee.DateRange('2021-07-01', '2021-08-01');\nprint('ee.DateRange as an input',\n fc.filter(ee.Filter.date(dateRange)));\n\nprint('Numbers (milliseconds since Unix epoch) as an input',\n fc.filter(ee.Filter.date(1625875200000, 1626739200001)));\n\nprint('ee.Date objects as an input',\n fc.filter(ee.Filter.date(ee.Date('2021-07-01'), ee.Date('2021-08-01'))));\n```\nPython setup\n\nSee the [Python Environment](/earth-engine/guides/python_install) page for information on the Python API and using\n`geemap` for interactive development. \n\n```python\nimport ee\nimport geemap.core as geemap\n```\n\n### Colab (Python)\n\n```python\nfrom pprint import pprint\n\n# collection.filterDate is preferred.\n# Constructed FeatureCollection representing a field site sampled at\n# four different dates.\ngeom = ee.Geometry.Point([-119.56, 37.67])\nfc = ee.FeatureCollection([\n ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-06-10')}),\n ee.Feature(geom, {'prop': 11, 'system:time_start': ee.Date('2021-06-20')}),\n ee.Feature(geom, {'prop': 19, 'system:time_start': ee.Date('2021-07-10')}),\n ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-07-20')})\n])\n\n# Filter the observations in July 2021.\nprint('Field site observations collection in July 2021:')\npprint(fc.filter(ee.Filter.date('2021-07-01', '2021-08-01')).getInfo())\n\n# Alternative input formats.\ndate_range = ee.DateRange('2021-07-01', '2021-08-01')\npprint(fc.filter(ee.Filter.date(date_range)).getInfo())\n\nprint('Numbers (milliseconds since Unix epoch) as an input:')\npprint(fc.filter(ee.Filter.date(1625875200000, 1626739200001)).getInfo())\n\nprint('ee.Date objects as an input:')\npprint(\n fc.filter(\n ee.Filter.date(ee.Date('2021-07-01'), ee.Date('2021-08-01'))\n ).getInfo()\n)\n```"]]
