diff --git a/src/components/Dashboard/common/SimpleDateTimePropertyFilter.jsx b/src/components/Dashboard/common/SimpleDateTimePropertyFilter.jsx
new file mode 100644
index 0000000..f0f30d5
--- /dev/null
+++ b/src/components/Dashboard/common/SimpleDateTimePropertyFilter.jsx
@@ -0,0 +1,527 @@
+import { useState, useEffect, useContext, useMemo, useCallback } from 'react'
+import { Spin, Tree } from 'antd'
+import PropTypes from 'prop-types'
+import dayjs from 'dayjs'
+import { ApiServerContext } from '../context/ApiServerContext'
+import { LoadingOutlined } from '@ant-design/icons'
+
+const MONTH_NAMES = Array.from({ length: 12 }, (_, i) =>
+  dayjs().month(i).format('MMMM')
+)
+
+const pad2 = (n) => String(n).padStart(2, '0')
+
+const nodeKey = {
+  year: (y) => `${y}`,
+  month: (y, m) => `${y}-${pad2(m)}`,
+  day: (y, m, d) => `${y}-${pad2(m)}-${pad2(d)}`,
+  hour: (y, m, d, h) => `${y}-${pad2(m)}-${pad2(d)}T${pad2(h)}`,
+  minute: (y, m, d, h, min) =>
+    `${y}-${pad2(m)}-${pad2(d)}T${pad2(h)}:${pad2(min)}`,
+  second: (y, m, d, h, min, s) =>
+    `${y}-${pad2(m)}-${pad2(d)}T${pad2(h)}:${pad2(min)}:${pad2(s)}`
+}
+
+const lastDayOfMonth = (year, month) => new Date(year, month, 0).getDate()
+
+const toYearExpression = (year) => `1 1 ${year}..31 12 ${year}`
+
+const toMonthExpression = (year, month) => {
+  const last = lastDayOfMonth(year, month)
+  return `1 ${month} ${year}..${last} ${month} ${year}`
+}
+
+const toDayExpression = (year, month, day) => `${day} ${month} ${year}`
+
+const toHourExpression = (year, month, day, hour) =>
+  `${day} ${month} ${year} ${hour}`
+
+const toMinuteExpression = (year, month, day, hour, minute) =>
+  `${day} ${month} ${year} ${hour} ${minute}`
+
+const toSecondExpression = (year, month, day, hour, minute, second) =>
+  `${day} ${month} ${year} ${hour} ${minute} ${second}`
+
+const parseDateValue = (value) => {
+  if (value == null || value === '') return null
+  const date = value instanceof Date ? value : new Date(value)
+  return Number.isNaN(date.getTime()) ? null : date
+}
+
+const hasNonMidnightTime = (date) =>
+  date.getHours() !== 0 ||
+  date.getMinutes() !== 0 ||
+  date.getSeconds() !== 0 ||
+  date.getMilliseconds() !== 0
+
+/** Nested map: year → month → day → hour → minute → Set(second) */
+const buildDateHierarchy = (dates) => {
+  const root = new Map()
+
+  for (const date of dates) {
+    const y = date.getFullYear()
+    const m = date.getMonth() + 1
+    const d = date.getDate()
+    const h = date.getHours()
+    const min = date.getMinutes()
+    const s = date.getSeconds()
+
+    if (!root.has(y)) root.set(y, new Map())
+    const months = root.get(y)
+    if (!months.has(m)) months.set(m, new Map())
+    const days = months.get(m)
+    if (!days.has(d)) days.set(d, { times: new Map(), dates: [] })
+    const dayNode = days.get(d)
+    dayNode.dates.push(date)
+
+    if (!dayNode.times.has(h)) dayNode.times.set(h, new Map())
+    const minutes = dayNode.times.get(h)
+    if (!minutes.has(min)) minutes.set(min, new Set())
+    minutes.get(min).add(s)
+  }
+
+  return root
+}
+
+const dayNeedsTimeLevels = (dayNode) => {
+  const { dates, times } = dayNode
+  if (dates.some(hasNonMidnightTime)) return true
+  let distinct = 0
+  for (const minutes of times.values()) {
+    for (const seconds of minutes.values()) {
+      distinct += seconds.size
+      if (distinct > 1) return true
+    }
+  }
+  return false
+}
+
+const sortNumericKeys = (map) => [...map.keys()].sort((a, b) => a - b)
+
+const buildTreeData = (hierarchy) => {
+  const years = sortNumericKeys(hierarchy)
+
+  return years.map((year) => {
+    const monthsMap = hierarchy.get(year)
+    const monthNodes = sortNumericKeys(monthsMap).map((month) => {
+      const daysMap = monthsMap.get(month)
+      const dayNodes = sortNumericKeys(daysMap).map((day) => {
+        const dayNode = daysMap.get(day)
+        const includeTime = dayNeedsTimeLevels(dayNode)
+        let children
+
+        if (includeTime) {
+          children = sortNumericKeys(dayNode.times).map((hour) => {
+            const minutesMap = dayNode.times.get(hour)
+            const minuteNodes = sortNumericKeys(minutesMap).map((minute) => {
+              const seconds = [...minutesMap.get(minute)].sort((a, b) => a - b)
+              const secondNodes = seconds.map((second) => ({
+                key: nodeKey.second(year, month, day, hour, minute, second),
+                title: pad2(second),
+                level: 'second',
+                year,
+                month,
+                day,
+                hour,
+                minute,
+                second,
+                expression: toSecondExpression(
+                  year,
+                  month,
+                  day,
+                  hour,
+                  minute,
+                  second
+                ),
+                isLeaf: true
+              }))
+
+              return {
+                key: nodeKey.minute(year, month, day, hour, minute),
+                title: pad2(minute),
+                level: 'minute',
+                year,
+                month,
+                day,
+                hour,
+                minute,
+                expression: toMinuteExpression(
+                  year,
+                  month,
+                  day,
+                  hour,
+                  minute
+                ),
+                children: secondNodes
+              }
+            })
+
+            return {
+              key: nodeKey.hour(year, month, day, hour),
+              title: `${pad2(hour)}:00`,
+              level: 'hour',
+              year,
+              month,
+              day,
+              hour,
+              expression: toHourExpression(year, month, day, hour),
+              children: minuteNodes
+            }
+          })
+        }
+
+        return {
+          key: nodeKey.day(year, month, day),
+          title: String(day),
+          level: 'day',
+          year,
+          month,
+          day,
+          expression: toDayExpression(year, month, day),
+          ...(children ? { children } : { isLeaf: true })
+        }
+      })
+
+      return {
+        key: nodeKey.month(year, month),
+        title: MONTH_NAMES[month - 1],
+        level: 'month',
+        year,
+        month,
+        expression: toMonthExpression(year, month),
+        children: dayNodes
+      }
+    })
+
+    return {
+      key: nodeKey.year(year),
+      title: String(year),
+      level: 'year',
+      year,
+      expression: toYearExpression(year),
+      children: monthNodes
+    }
+  })
+}
+
+const collectAllKeys = (nodes, keys = []) => {
+  for (const node of nodes) {
+    keys.push(node.key)
+    if (node.children?.length) collectAllKeys(node.children, keys)
+  }
+  return keys
+}
+
+const collectLeafKeys = (nodes, keys = []) => {
+  for (const node of nodes) {
+    if (!node.children?.length) keys.push(node.key)
+    else collectLeafKeys(node.children, keys)
+  }
+  return keys
+}
+
+const indexNodesByKey = (nodes, map = new Map()) => {
+  for (const node of nodes) {
+    map.set(node.key, node)
+    if (node.children?.length) indexNodesByKey(node.children, map)
+  }
+  return map
+}
+
+/** Prefer fully-selected ancestors over listing every leaf (Excel-style). */
+const collectCollapsedExpressions = (nodes, checkedSet) => {
+  const expressions = []
+
+  const walk = (nodeList) => {
+    for (const node of nodeList) {
+      const leafKeys = collectLeafKeys([node])
+      const allChecked =
+        leafKeys.length > 0 && leafKeys.every((key) => checkedSet.has(key))
+
+      if (allChecked) {
+        expressions.push(node.expression)
+        continue
+      }
+
+      if (node.children?.length) walk(node.children)
+    }
+  }
+
+  walk(nodes)
+  return expressions
+}
+
+const filterTreeBySearch = (nodes, query) => {
+  if (!query) return nodes
+
+  const filterNodes = (list) => {
+    const result = []
+    for (const node of list) {
+      const titleMatch = String(node.title).toLowerCase().includes(query)
+      if (titleMatch) {
+        result.push(node)
+        continue
+      }
+      const filteredChildren = node.children?.length
+        ? filterNodes(node.children)
+        : []
+      if (filteredChildren.length > 0) {
+        result.push({ ...node, children: filteredChildren })
+      }
+    }
+    return result
+  }
+
+  return filterNodes(nodes)
+}
+
+const parseExpressionToKeys = (expression, nodeByKey) => {
+  const text = String(expression).trim()
+  if (!text) return []
+
+  // Year: 1 1 Y..31 12 Y
+  let match = text.match(/^1 1 (\d+)\.\.31 12 \1$/)
+  if (match) {
+    const key = nodeKey.year(Number(match[1]))
+    return nodeByKey.has(key) ? [key] : []
+  }
+
+  // Month: 1 M Y..last M Y
+  match = text.match(/^1 (\d+) (\d+)\.\.(\d+) \1 \2$/)
+  if (match) {
+    const month = Number(match[1])
+    const year = Number(match[2])
+    const last = Number(match[3])
+    if (last === lastDayOfMonth(year, month)) {
+      const key = nodeKey.month(year, month)
+      return nodeByKey.has(key) ? [key] : []
+    }
+  }
+
+  // Day-first numeric: D M Y [H [Min [S]]]
+  match = text.match(
+    /^(\d+)\s+(\d+)\s+(\d+)(?:\s+(\d+)(?:\s+(\d+)(?:\s+(\d+))?)?)?$/
+  )
+  if (match) {
+    const day = Number(match[1])
+    const month = Number(match[2])
+    const year = Number(match[3])
+    const hour = match[4] != null ? Number(match[4]) : null
+    const minute = match[5] != null ? Number(match[5]) : null
+    const second = match[6] != null ? Number(match[6]) : null
+
+    let key
+    if (second != null) {
+      key = nodeKey.second(year, month, day, hour, minute, second)
+    } else if (minute != null) {
+      key = nodeKey.minute(year, month, day, hour, minute)
+    } else if (hour != null) {
+      key = nodeKey.hour(year, month, day, hour)
+    } else {
+      key = nodeKey.day(year, month, day)
+    }
+    return nodeByKey.has(key) ? [key] : []
+  }
+
+  // Interval spanning a single calendar day already handled; try ISO / Date parse
+  // for a specific instant → check the deepest matching node.
+  if (/[-/T]/.test(text) || /\d:\d/.test(text)) {
+    const date = parseDateValue(text)
+    if (!date) return []
+    const y = date.getFullYear()
+    const m = date.getMonth() + 1
+    const d = date.getDate()
+    const h = date.getHours()
+    const min = date.getMinutes()
+    const s = date.getSeconds()
+
+    const candidates = [
+      nodeKey.second(y, m, d, h, min, s),
+      nodeKey.minute(y, m, d, h, min),
+      nodeKey.hour(y, m, d, h),
+      nodeKey.day(y, m, d)
+    ]
+    for (const key of candidates) {
+      if (nodeByKey.has(key)) return [key]
+    }
+  }
+
+  return []
+}
+
+const expandKeysForChecked = (keys, nodeByKey) => {
+  const checked = new Set()
+
+  for (const key of keys) {
+    const node = nodeByKey.get(key)
+    if (!node) {
+      checked.add(key)
+      continue
+    }
+    for (const leaf of collectLeafKeys([node])) {
+      checked.add(leaf)
+    }
+    // Also mark intermediate keys so Tree shows parent check state correctly
+    checked.add(key)
+    if (node.children?.length) {
+      for (const childKey of collectAllKeys(node.children)) {
+        checked.add(childKey)
+      }
+    }
+  }
+
+  return [...checked]
+}
+
+const SimpleDateTimePropertyFilter = ({
+  modelType,
+  propertyName,
+  value = [],
+  onChange,
+  search = ''
+}) => {
+  const { getModelPropertyValues } = useContext(ApiServerContext)
+  const [dates, setDates] = useState([])
+  const [loading, setLoading] = useState(false)
+  const [localChecked, setLocalChecked] = useState(null)
+
+  useEffect(() => {
+    let cancelled = false
+
+    const loadOptions = async () => {
+      if (!modelType || !propertyName) return
+      setLoading(true)
+      try {
+        const values = await getModelPropertyValues(modelType, propertyName)
+        if (cancelled) return
+        const parsed = (values || [])
+          .map(parseDateValue)
+          .filter(Boolean)
+          .sort((a, b) => a.getTime() - b.getTime())
+        setDates(parsed)
+      } finally {
+        if (!cancelled) setLoading(false)
+      }
+    }
+
+    loadOptions()
+    return () => {
+      cancelled = true
+    }
+  }, [modelType, propertyName, getModelPropertyValues])
+
+  const treeData = useMemo(
+    () => buildTreeData(buildDateHierarchy(dates)),
+    [dates]
+  )
+
+  const nodeByKey = useMemo(() => indexNodesByKey(treeData), [treeData])
+  const allKeys = useMemo(() => collectAllKeys(treeData), [treeData])
+  const allLeafKeys = useMemo(() => collectLeafKeys(treeData), [treeData])
+
+  const valueKey = useMemo(
+    () => JSON.stringify(value || []),
+    [value]
+  )
+
+  useEffect(() => {
+    if (treeData.length === 0) return
+
+    if (value?.length > 0) {
+      const matched = []
+      for (const expr of value) {
+        matched.push(...parseExpressionToKeys(expr, nodeByKey))
+      }
+      if (matched.length > 0) {
+        setLocalChecked(expandKeysForChecked(matched, nodeByKey))
+      } else {
+        // Unrecognized expression — treat as no tree selection highlight
+        setLocalChecked([])
+      }
+    } else {
+      setLocalChecked(allKeys)
+    }
+    // valueKey captures value contents
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [treeData, valueKey, allKeys, nodeByKey])
+
+  const filteredTreeData = useMemo(() => {
+    const query = search.trim().toLowerCase()
+    return filterTreeBySearch(treeData, query)
+  }, [treeData, search])
+
+  const checkedKeys = localChecked ?? allKeys
+
+  const emitChange = useCallback(
+    (nextKeys) => {
+      setLocalChecked(nextKeys)
+      const checkedSet = new Set(nextKeys)
+
+      if (
+        allLeafKeys.length > 0 &&
+        allLeafKeys.every((key) => checkedSet.has(key))
+      ) {
+        onChange?.([])
+        return
+      }
+
+      const expressions = collectCollapsedExpressions(treeData, checkedSet)
+      onChange?.(expressions)
+    },
+    [allLeafKeys, onChange, treeData]
+  )
+
+  const handleCheck = (checked) => {
+    const next = Array.isArray(checked) ? checked : checked.checked
+    const query = search.trim().toLowerCase()
+
+    if (!query) {
+      emitChange(next)
+      return
+    }
+
+    // Preserve checked leaves that are hidden by the search filter
+    const visibleLeafKeys = new Set(collectLeafKeys(filteredTreeData))
+    const hiddenSelectedLeaves = checkedKeys.filter((key) => {
+      const node = nodeByKey.get(key)
+      return node && !node.children?.length && !visibleLeafKeys.has(key)
+    })
+    const visibleSelectedLeaves = next.filter((key) => {
+      const node = nodeByKey.get(key)
+      return node && !node.children?.length
+    })
+
+    emitChange(
+      expandKeysForChecked(
+        [...hiddenSelectedLeaves, ...visibleSelectedLeaves],
+        nodeByKey
+      )
+    )
+  }
+
+  return (
+    <Spin spinning={loading} indicator={<LoadingOutlined spin />}>
+      {treeData.length > 0 ? (
+        <Tree
+          checkable
+          selectable={false}
+          treeData={filteredTreeData}
+          checkedKeys={checkedKeys}
+          onCheck={handleCheck}
+          defaultExpandAll={false}
+          style={{ minWidth: 0 }}
+        />
+      ) : null}
+    </Spin>
+  )
+}
+
+SimpleDateTimePropertyFilter.propTypes = {
+  modelType: PropTypes.string,
+  propertyName: PropTypes.string,
+  value: PropTypes.array,
+  onChange: PropTypes.func,
+  search: PropTypes.string
+}
+
+export default SimpleDateTimePropertyFilter
diff --git a/src/components/Dashboard/common/SimplePropertyFilter.jsx b/src/components/Dashboard/common/SimplePropertyFilter.jsx
index 0954419..ea26933 100644
--- a/src/components/Dashboard/common/SimplePropertyFilter.jsx
+++ b/src/components/Dashboard/common/SimplePropertyFilter.jsx
@@ -7,9 +7,13 @@ import {
   getModelProperties
 } from '../../../database/ObjectModels'
 import ObjectProperty from './ObjectProperty'
+import SimpleDateTimePropertyFilter from './SimpleDateTimePropertyFilter'
 import { LoadingOutlined } from '@ant-design/icons'
 const { Text } = Typography
 
+const isDateTimeProperty = (property) =>
+  property?.type === 'dateTime' || property?.type === 'date'
+
 const getOptionKey = (option) => {
   if (option && typeof option === 'object') {
     if (option.objectType) {
@@ -63,7 +67,7 @@ const SimplePropertyFilter = ({
     let cancelled = false
 
     const loadOptions = async () => {
-      if (!modelType || !propertyName) return
+      if (!modelType || !propertyName || isDateTimeProperty(property)) return
       setLoading(true)
       try {
         const values = await getModelPropertyValues(modelType, propertyName)
@@ -81,7 +85,7 @@ const SimplePropertyFilter = ({
     return () => {
       cancelled = true
     }
-  }, [modelType, propertyName, getModelPropertyValues])
+  }, [modelType, propertyName, getModelPropertyValues, property])
 
   const valueKey = useMemo(
     () => JSON.stringify((value || []).map(getOptionKey)),
@@ -132,6 +136,18 @@ const SimplePropertyFilter = ({
     emitChange([...hiddenSelected, ...visibleCheckedKeys])
   }
 
+  if (isDateTimeProperty(property)) {
+    return (
+      <SimpleDateTimePropertyFilter
+        modelType={modelType}
+        propertyName={propertyName}
+        value={value}
+        onChange={onChange}
+        search={search}
+      />
+    )
+  }
+
   return (
     <Spin spinning={loading} indicator={<LoadingOutlined spin />}>
       <Checkbox.Group