Occurrence record: Observations:16089902

HumanObservation of Diphlebia euphoeoides recorded on 2018-08-25

Dataset

Data resource iNaturalist
Institution code Supplied institution code "iNaturalist"
Catalog number 16089902
Occurrence ID https://www.inaturalist.org/observations/16089902
Basis of record Human observation
Identified date 2018-09-01T04:46:54Z
Observer Richter, R. Reiner
Supplied as "Reiner Richter"
Rights © Reiner Richter some rights reserved
License CC-BY-NC-Int
Supplied as http://creativecommons.org/licenses/by/4.0/
Rightsholder Reiner Richter
Dataset name iNaturalist research-grade observations
Establishment means wild
Occurrence status present
Collection code Observations
Abcd identification qualifier Not provided
Date identified 2018-09-01
Supplied as 2018-09-01T04:46:54Z
Identification ID 34609411

Event

Record date 2018-08-25
Supplied date "2018-08-25T08:52:00+10:00"
Date precision Day
Verbatim event date 2018/08/25 8:52 AM AEST
Event time 22:52:00Z

Taxonomy

Scientific name Diphlebia euphoeoides
Taxon rank unranked
Supplied as "species"
Kingdom Animalia
Phylum Arthropoda
Class Insecta
Order Odonata
Family Lestoideidae
Genus Diphlebia
Taxonomic issue No issues
Name match metric Exact match
The supplied name matched the name exactly.
Name parse type wellformed

Geospatial

Country Australia
State / Province Queensland
Locality Hinchinbrook (S)
Latitude -18.8648697222
Longitude 146.1279408333
Geodetic datum EPSG:4326
Verbatim locality Yuruga QLD 4850, Australia
Coordinate precision Unknown
Biome Terrestrial
Country code AU

Additional properties

References https://www.inaturalist.org/observations/16089902

User flagged issues 

User Assertion Status:

    Data quality tests

    Test name Result
    Occurrence status assumed to be present Warning
    Geodetic datum assumed WGS84 Warning
    Country inferred from coordinates Warning
    Basis of record not supplied Passed
    Basis of record badly formed Passed
    Invalid collection date Passed
    Incomplete collection date Passed
    Identification date before occurrence date Passed
    First of the month Passed
    Cultivated / escapee Passed
    Missing identification date Passed
    Collector name unparseable Passed
    Missing catalogue number Passed
    Data are generalised Passed
    Missing taxonomic rank Passed
    Name not supplied Passed
    Kingdom not recognised Passed
    Name not recognised Passed
    Invalid scientific name Passed
    Name not in national checklists Passed
    Decimal coordinates not supplied Passed
    Coordinates are transposed Passed
    Coordinates are out of range for species Passed
    Supplied coordinates are zero Passed
    Zero latitude Passed
    Zero longitude Passed
    Location not supplied Passed
    Supplied coordinates centre of state Passed
    Coordinates centre of country Passed
    Missing geodetic datum Passed
    Coordinates dont match supplied state Passed
    Habitat incorrect for species Passed
    Show/Hide 10 missing properties
    Show/Hide 44 tests that have not been run

    Additional political boundaries information

    Area Management
    Australian Tropical Savanna Australian Tropical Savanna
    CAPAD 2012 Terrestrial Paluma Range
    CAPAD 2014 Terrestrial Paluma Range
    Collaborative Australian Protected Areas Database (CAPAD) 2010 Paluma Range
    Fallow practice - dominant (area) No cereal producers
    Fallow practice - dominant (number) No cereal producers
    GER National Corridor GER National Corridor
    GER Standard Boundary GER Standard Boundary
    Global 200 priority ecoregions - Freshwater Eastern Australia Rivers & Streams
    Global 200 priority ecoregions - Marine Great Barrier Reef
    Global 200 priority ecoregions - Terrestrial Queensland Tropical Forests
    Great Eastern Ranges Initiative GER Great Eastern Ranges Initiative
    Important Bird Areas (IBA) Australia Paluma IBA
    Irrigation practice - dominant No irrigation
    Land use Nature conservation
    NRM Regions Wet Tropics
    NRM Regions 2014 Wet Tropics
    NRM Regions 2015 Wet Tropics
    Stubble practice - dominant (area) No cereal producers
    Stubble practice - dominant (number) No cereal producers
    Tillage practice - dominant (area) No cereal producers
    Tillage practice - dominant (number) No cereal producers
    Biodiversity
    Freshwater Ecoregions of the World Arafura - Carpentaria
    IBRA 6 Regions Wet Tropics
    IBRA 6 Sub Regions Herbert
    IBRA 7 Regions Wet Tropics
    IBRA 7 Subregions Paluma-Seaview
    Terrestrial Ecoregional Boundaries Queensland Tropical Rain Forests
    World Anthropogenic Biomes (2000) Remote woodlands
    Climate
    Agroclimatic classification of Australia Strongly developed wet and dry seasons with cooler winter and with a growing season lasting at least six months
    Koppen Climate Classification (All Classes) Subtropical: distinctly dry winter
    Koppen Climate Classification (Major Classes) Subtropical
    Fire
    Fire regime niches Pasture (tropical and subtropical)
    Hydrology
    Drainage Divisions Level 1 North East Coast
    Drainage Divisions Level 2 HERBERT RIVER
    River Regions HERBERT RIVER
    Marine
    Marine Ecoregions of the World Central and Southern Great Barrier Reef
    States including coastal waters Queensland (including Coastal Waters)
    Political
    ASGS Australian States and Territories Queensland
    Australian States and Territories Queensland
    Commonwealth Electoral Boundaries Kennedy
    Indigenous Protected Areas 2013 Girringun
    LGA Boundaries (deprecated) Hinchinbrook
    Local Government Areas Hinchinbrook (S)
    PSMA Commonwealth Electoral Boundaries (2016) KENNEDY
    PSMA State Electoral Boundaries (2016) HINCHINBROOK
    Statistical Local Areas Hinchinbrook (S)
    World Country Boundaries Australia
    Substrate
    Geological Regions of Australia Charters Towers Region
    Surface Geology of Australia Cgw9
    Topography
    Physiographic Provinces of Australia Burdekin Uplands Province
    Physiographic Regions 2011 Hervey Tablelands
    Vegetation
    Australia's Indigenous forest estate (2013) v2.0 Indigenous co-managed, Native forest
    Forests of Australia (2013) v2.0 Eucalypt Medium Woodland
    Land cover Native forests and woodlands
    NVIS 4.1 Major Vegetation Groups Eucalypt Woodlands
    NVIS 4.1 Major Vegetation Subgroups Eucalyptus woodlands with a tussock grass understorey
    Tenure of Australia's forests (2013) v2.0 Nature Conservation Reserve
    Vegetation - condition Residual
    Vegetation types - native Rainforests and vine thickets
    Vegetation types - present Rainforest and vine thickets

    Environmental sampling for this location

    Area Management
    Beef numbers 272151.0 dse
    Dairy numbers 0.0 dse
    Natural resource management expenditure 4148781.0 $
    Natural resource management expenditure - additional 2.0 $/ha
    Sheep numbers 0.0 dse
    Biodiversity
    Acacia – Miller et al 2012 - 0.5 degree 0.3607
    Amphibians (global) – Pyron & Wiens 2011 - 0.5 degree 4.0792
    Endemism 0.013821846
    Endemism (Non-marine) 0.016739015
    Mammals – Fritz et al 2009 - 0.5 degree 0.4691
    Migratory species (2008) 6.0 frequency
    Occurrence Density 57.08642 frequency
    Shannon Diversity (H) 2.337052 index
    Species Richness 3.382716 frequency
    Threatened communities (2008) 0.0 frequency
    Threatened species (2008) 8.0 frequency
    Climate
    2030A1BMk35M: Aridity index - annual mean 0.5759725
    2030A1BMk35M: Aridity index - month max 2.0083594
    2030A1BMk35M: Aridity index - month min 0.088336036
    2030A1BMk35M: Evaporation - annual mean 192.75917 mm
    2030A1BMk35M: Evaporation - month max 246.02 mm
    2030A1BMk35M: Evaporation - month min 133.33 mm
    2030A1BMk35M: Growth index C3 macrotherm plants - annual mean 0.43 index
    2030A1BMk35M: Growth index C3 mesotherm plants - annual mean 0.27 index
    2030A1BMk35M: Growth index C4 megatherm plants - annual mean 0.38 index
    2030A1BMk35M: Humidity - annual mean relative 3pm 70.26494 %
    2030A1BMk35M: Humidity - month max relative 3pm 75.05978 %
    2030A1BMk35M: Humidity - month min relative 3pm 65.270775 %
    2030A1BMk35M: Precipitation - annual mean 115.72667 mm
    2030A1BMk35M: Precipitation - driest month 14.7 mm
    2030A1BMk35M: Precipitation - equinox seasonality ratio 0.36686847
    2030A1BMk35M: Precipitation - max difference between successive months 5.2929034 mm/day
    2030A1BMk35M: Precipitation - min difference between successive months -5.982007 mm/day
    2030A1BMk35M: Precipitation - solstice seasonality ratio 14.967538
    2030A1BMk35M: Precipitation - spring or autumn season -1.7137897
    2030A1BMk35M: Precipitation - summer or winter season 13.711722
    2030A1BMk35M: Precipitation - wettest month 379.6 mm
    2030A1BMk35M: Precipitation deficit - annual mean -77.0325 mm
    2030A1BMk35M: Precipitation deficit - month max -209.31 mm
    2030A1BMk35M: Precipitation deficit - month min 190.59001 mm
    2030A1BMk35M: Radiation - max month precipitation modified 24.7 MJ/m2/day
    2030A1BMk35M: Radiation - mean annual precipitation modified 19.363333 MJ/m2/day
    2030A1BMk35M: Radiation - min month precipitation modified 14.78 MJ/m2/day
    2030A1BMk35M: Temperature - annual max mean 29.361668 degrees C
    2030A1BMk35M: Temperature - annual min mean 19.471666 degrees C
    2030A1BMk35M: Temperature - annual range 19.029999 degrees C
    2030A1BMk35M: Temperature - coldest month min 13.7 degrees C
    2030A1BMk35M: Temperature - coolest month max 24.87 degrees C
    2030A1BMk35M: Temperature - max difference in max 2.3900146 degrees C/day
    2030A1BMk35M: Temperature - max difference in min 3.1100159 degrees C/day
    2030A1BMk35M: Temperature - max month diurnal range 11.740021 degrees C
    2030A1BMk35M: Temperature - mean annual diurnal range 9.889999 degrees C
    2030A1BMk35M: Temperature - min difference in max -2.080017 degrees C/day
    2030A1BMk35M: Temperature - min difference in min -3.4900208 degrees C/day
    2030A1BMk35M: Temperature - min month diurnal range 8.179993 degrees C
    2030A1BMk35M: Temperature - month hottest maximum 32.73 degrees C
    2030A1BMk35M: Temperature - warmest month min 23.88 degrees C
    Aridity index - annual mean 0.8625112
    Aridity index - month max 2.7176428
    Aridity index - month min 0.15980014
    Evaporation - annual mean 155.91579 (ml/5km x 5km pixel)
    Evaporation - average 26592.0 ml
    Evaporation - month max 217.55556 mm
    Evaporation - month min 98.98807 mm
    Evaporation - variability 17.0 %
    Growth index C3 macrotherm plants - annual mean 0.48 index
    Growth index C3 mesotherm plants - annual mean 0.45 index
    Growth index C4 megatherm plants - annual mean 0.4 index
    Humidity - annual mean relative 79.097885 %
    Humidity - annual mean relative 3pm 69.58457 %
    Humidity - month max relative 84.04946 %
    Humidity - month max relative 3pm 74.54806 %
    Humidity - month min relative 64.44161 %
    Humidity - month min relative 3pm 64.44161 %
    Precipitation - annual 1387.0 mm
    Precipitation - annual (Bio12) 1497.0 mm
    Precipitation - annual (log) seasonality index 0.28591457
    Precipitation - annual mean 139.10735 mm
    Precipitation - annual seasonality 4.0005813
    Precipitation - annual seasonality ratio 5.014997
    Precipitation - autumn 498.0 mm
    Precipitation - autumn reliability 39.0 %
    Precipitation - coldest quarter (Bio19) 74.0 mm
    Precipitation - driest month 21.0 mm
    Precipitation - driest period (Bio14) 4.0 mm
    Precipitation - driest quarter (Bio17) 65.0 mm
    Precipitation - equinox seasonality ratio 0.33108738
    Precipitation - max difference between successive months 7.071153 mm/day
    Precipitation - min difference between successive months -6.4539313 mm/day
    Precipitation - seasonality (Bio15) 95.0 mm
    Precipitation - solstice seasonality ratio 12.392462
    Precipitation - spring 164.0 mm
    Precipitation - spring or autumn (log) season -0.21631849
    Precipitation - spring or autumn season -2.0079203
    Precipitation - spring reliability 25.0 %
    Precipitation - summer 960.0 mm
    Precipitation - summer or winter (log) season 0.5764431
    Precipitation - summer or winter season 11.2448015
    Precipitation - summer reliability 40.0 %
    Precipitation - warmest quarter (Bio18) 833.0 mm
    Precipitation - wettest month 418.62885 mm
    Precipitation - wettest period (Bio13) 97.0 mm
    Precipitation - wettest quarter (Bio16) 909.0 mm
    Precipitation - winter 77.0 mm
    Precipitation - winter reliability 22.0 %
    Precipitation deficit - annual mean -16.808441 mm
    Precipitation deficit - month max -168.34024 mm
    Precipitation deficit - month min 264.5877 mm
    Radiation - annual mean (Bio20) 19.1 MJ/m2/day
    Radiation - coldest quarter (Bio27) 16.0 MJ/m2/day
    Radiation - driest quarter (Bio25) 17.2 MJ/m2/day
    Radiation - highest period (Bio21) 24.4 MJ/m2/day
    Radiation - lowest period (Bio22) 14.6 MJ/m2/day
    Radiation - max month precipitation modified 24.7 MJ/m2/day
    Radiation - mean annual precipitation modified 19.107517 MJ/m2/day
    Radiation - min month precipitation modified 14.68469 MJ/m2/day
    Radiation - seasonality (Bio23) 17.0
    Radiation - warmest quarter (Bio26) 20.9 MJ/m2/day
    Radiation - wettest quarter (Bio24) 19.4 MJ/m2/day
    Temperature - annual max mean 27.999166 degrees C
    Temperature - annual mean (Bio01) 23.5 degrees C
    Temperature - annual min mean 18.429167 degrees C
    Temperature - annual range 18.684692 degrees C
    Temperature - annual range (Bio07) 19.2 degrees C
    Temperature - coldest month min 13.13 degrees C
    Temperature - coldest period min (Bio06) 12.7 degrees C
    Temperature - coldest quarter mean (Bio11) 19.0 degrees C
    Temperature - coolest month max 23.53 degrees C
    Temperature - diurnal range mean (Bio02) 9.8 degrees C
    Temperature - driest quarter mean (Bio09) 19.3 degrees C
    Temperature - isothermality (Bio03) 0.51 %
    Temperature - max absolute mean max 42.0 degrees C
    Temperature - max difference in max 2.0500183 degrees C/day
    Temperature - max difference in min 2.5899963 degrees C/day
    Temperature - max month diurnal range 10.929993 degrees C
    Temperature - mean annual absolute mean min 6.16425 degrees C
    Temperature - mean annual diurnal range 9.57 degrees C
    Temperature - min absolute mean min 2.932 degrees C
    Temperature - min difference in max -2.1400146 degrees C/day
    Temperature - min difference in min -2.9300232 degrees C/day
    Temperature - min month diurnal range 8.01001 degrees C
    Temperature - month hottest maximum 31.32 degrees C
    Temperature - month mean absolute max 35.641834 degrees C
    Temperature - seasonality (Bio04) 1.07
    Temperature - warmest month min 22.44 degrees C
    Temperature - warmest period max (Bio05) 31.9 degrees C
    Temperature - warmest quarter (Bio10) 27.0 degrees C
    Temperature - wettest quarter mean (Bio08) 26.8 degrees C
    Vapour pressure deficit - annual mean 0.47250792 KPa
    Vapour pressure deficit - annual mean 9am 0.62873703 KPa
    Vapour pressure deficit - month max 0.81122327 KPa
    Vapour pressure deficit - month max 9am 0.81122327 KPa
    Vapour pressure deficit - month min 0.22920072 KPa
    Vapour pressure deficit - month min 9am 0.48224497 KPa
    Wind run - annual mean 196.63202 km/day
    Wind run - month max 220.50273 km/day
    Wind run - month min 181.17714 km/day
    Wind speed - annual mean 3pm 4.3642273 m/s
    Wind speed - annual mean 9am 3.201775 m/s
    Wind speed - annual mean 9am or 3pm 4.4289937 m/s
    Wind speed - month max 3pm 4.905325 m/s
    Wind speed - month max 9am 3.9526625 m/s
    Wind speed - month max 9am or 3pm 4.905325 m/s
    Wind speed - month min 3pm 3.9053247 m/s
    Wind speed - month min 9am 2.6526623 m/s
    Wind speed - month min 9am or 3pm 2.6526623 m/s
    WorldClim: Precipitation - annual 1393.0 mm
    WorldClim: Precipitation - coldest quarter 68.0 mm
    WorldClim: Precipitation - driest month 19.0 mm
    WorldClim: Precipitation - driest quarter 60.0 mm
    WorldClim: Precipitation - seasonality 91.0
    WorldClim: Precipitation - warmest quarter 738.0 mm
    WorldClim: Precipitation - wettest month 301.0 mm
    WorldClim: Precipitation - wettest quarter 862.0 mm
    WorldClim: Temperature - annual mean 236.0 degrees C * 10
    WorldClim: Temperature - annual range 192.0 degrees C * 10
    WorldClim: Temperature - coldest month min 127.0 degrees C * 10
    WorldClim: Temperature - coldest quarter mean 191.0 degrees C * 10
    WorldClim: Temperature - diurnal range mean 103.0 degrees C * 10
    WorldClim: Temperature - driest quarter mean 200.0 degrees C * 10
    WorldClim: Temperature - isothermality 53.0 %
    WorldClim: Temperature - seasonality 3099.0 standard deviation (degrees C * 10) * 100
    WorldClim: Temperature - warmest month max 319.0 degrees C * 10
    WorldClim: Temperature - warmest quarter mean 270.0 degrees C * 10
    WorldClim: Temperature - wettest quarter mean 267.0 degrees C * 10
    Distance
    Distance - to any water (weighted) 0.0 degrees
    Distance - to coast 0.150333 km x 100
    Distance - to non-permanent water (weighted) 0.0 degrees
    Distance - to permanent water (weighted) 0.053851645 km
    Euclidean Distance to Coast (metres) 16322.617 m
    Remoteness index 6.549086
    Hydrology
    Drainage - average 938.0 megalitres/5x5km/year
    Drainage - variability 153.0 %
    Runoff - average 7277.0 megalitres/5x5km/year
    Water Observations From Space 0.0 Percentage
    Marine
    Great Barrier Reef 100m DEM 75.11 m
    Social
    Age 43.7 years
    Age - prime group 21.8 Count
    Disadvantaged 976.607 points (mean=1000)
    Education - degrees 6.2 %
    Education - vocational training 22.5 %
    Employment 21.1 %
    Home ownership 68.7 %
    Income - high 22.7 %
    Income - low 18.4 %
    Internet 45.4 %
    Population - change -1.9 count
    Population - density SLA 2006 p/sqkm) 4.1 people/km^2
    Unemployment rate 2.0 %
    Work force - older 27.5 Count
    Substrate
    2030A1BMk35M: Crop factor - annual mean 0.5352158
    2030A1BMk35M: Crop factor - month max 0.90000004
    2030A1BMk35M: Crop factor - month min 0.088336036
    2030A1BMk35M: Water deficit - month max 92.67614 mm
    2030A1BMk35M: Water deficit - month mean 27.499615 mm
    2030A1BMk35M: Water deficit - month min 0.0 mm
    2030A1BMk35M: Water potential - annual mean -0.94447035 MPa
    2030A1BMk35M: Water potential - month max -2.8643754E-14 MPa
    2030A1BMk35M: Water potential - month min -1.5 MPa
    2030A1BMk35M: Water stress index - annual mean 48.169422
    2030A1BMk35M: Water stress index - month max 81.0
    2030A1BMk35M: Water stress index - month min 7.950243
    2030A1BMk35M: Water surplus - annual mean 13.281251 mm
    2030A1BMk35M: Water surplus - month max 107.67102 mm
    2030A1BMk35M: Water surplus - month min 0.0 mm
    ASRIS 0-1m Plant Available Water Capacity (250m raster) 54.0 mm
    ASRIS 0-30cm Bulk Density (250m raster) 1.69 Mg/m3
    ASRIS 0-30cm Clay Content (250m raster) 17.0 %
    Bouguer gravity anomalies 89.90145 Gal
    Bulk density 1.3048407 Mg/m^3
    Calcrete 0.0 presence
    Carbon - organic 1.0095756 %
    Carbon store pre-European 101.0309 kgC/ha
    Clay % 27.209164 %
    Crop factor - annual mean 0.6759299
    Crop factor - month max 0.90000004
    Crop factor - month min 0.1834239
    Erodibility 56.0 k factor
    Erosional surfaces - proportion 100.0 %
    Erosivity 8808.0 MJ mm/ha/hr
    Hydrologic conductivity - average saturated 146.15385 mm/h
    Hydrological conductivity - uncertainty 8.384615
    Lithology - age range 60.2 my
    Lithology - fertility 4.0 index
    Lithology - mean age 333.875 my
    Lithology - mean age (log) 2.523584 log my
    Lithology - mean age range (log) 1.7795964 log my
    Magnetic anomalies -201.0 nT
    Moisture - average 51.0 %
    Moisture - variability 17.0 %
    Moisture Index - annual mean (Bio28) 0.67
    Moisture Index - coldest quarter mean (Bio35) 0.59
    Moisture Index - highest period (Bio29) 1.0
    Moisture Index - highest quarter mean (Bio32) 1.0
    Moisture Index - lowest period (Bio30) 0.13
    Moisture Index - lowest quarter mean (Bio33) 0.2
    Moisture Index - seasonality (Bio31) 50.0
    Moisture Index - warmest quarter mean (Bio34) 0.86
    Nitrogen - plant-available pre-European 8727.041 kgN/ha
    Nitrogen concentration pre-European 55.93888 mgN kg/H2O
    Nitrogen store pre-European 203.8539 kgN/ha
    Nutrient status 1.0 index
    Pedality hydrological score 0.0
    Ph - soil 3.0 ph
    Phosphorus - plant-available pre-European 37.5327 kgP/ha
    Phosphorus - plant-available total pre-European 1523.6014 kgP/ha
    Phosphorus pre-European 10.29922 mgP kg/H2O
    Soil depth 1.3 m
    Soil pedality 2.0
    Soils - coarse 0.0 class
    Substrate data reliability 1.0
    Topographic wetness index 7.980869
    Unreliable water retention parameters 0.0
    Water deficit - month max 65.778885 mm
    Water deficit - month mean 18.636255 mm
    Water deficit - month min 0.0 mm
    Water holding capacity 66750.0 mm
    Water holding capacity - plant-available 198.0 mm
    Water potential - annual mean -0.72016937 MPa
    Water potential - month max -2.8643754E-14 MPa
    Water potential - month min -1.5 MPa
    Water stress index - annual mean 60.833687
    Water stress index - month max 81.0
    Water stress index - month min 16.50815
    Water surplus - annual mean 38.90382 mm
    Water surplus - month max 279.99182 mm
    Water surplus - month min 0.0 mm
    Weathering Intensity V2 1.27864 Weathering Intensity Index
    Topography
    Aspect 4.0 degrees
    Averaged Topographic Relief 648.125 metres
    Bathymetry and Topography 9 sec 98.0 m
    Elevation 159.0 m
    Ridge top flatness 0.0
    Ridge top flatness - proportion 0.0 %
    Slope length 1000.0 m
    Topographic Slope (degrees) 5.49398 degrees
    Topographic relief 191.2437 m
    Topographic roughness 31.0586 %
    Topographic slope (%) 12.95898 %
    Valley bottom % 0.0 %
    Valley bottom flatness index 0.0
    Vegetation
    Enhanced Vegetation Index (2012-03-05) 0.4153 EVI
    Fraction of Photosynthetically Active Radiation (fPAR) 88.0 %
    Gross Primary Productivity (2012-03-13) 0.0097 kg C/m^2
    Leaf Area Index (LAI) - 2012-03-05 5.7 m^2 plant / m^2 ground
    NDVI Mean 77.0 NDVI x 100
    NPP Mean 7.0 tonnes/ha/yr
    Normalized Difference Vegetation Index (2012-03-05) 0.6032 NDVI
    Phenology peak day of year 2002 dry 73.0 Day
    Phenology peak day of year 2012 wet 49.0 Day