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= bpc =
This is "nn::bpc::IBoardPowerControlManager".
 
{| class="wikitable" border="1"
|-
! Cmd || Name
|-
| 0 || ShutdownConsoleShutdownSystem|-| 1 || RebootSystem|-| 2 || GetWakeupReason|-| 3 || GetShutdownReason
|-
| 1 4 || RebootConsoleGetAcOk
|-
| 2 5 ||GetBoardPowerControlEvent
|-
| 3 6 ||[2.0.0+] GetSleepButtonState
|-
| 4 7 ||[2.0.0+] GetPowerEvent
|-
| 5 8 || Returns an event handle[2.0.0+] CreateWakeupTimer
|-
| 6 9 ||[2.0.0+] CancelWakeupTimer
|-
| 7 10 || Returns an event handle[2.0.0+] [[#EnableWakeupTimerOnDevice]]
|-
| 8 11 ||[3.0.0+] CreateWakeupTimerEx
|-
| 9 12 ||[3.0.0+] GetLastEnabledWakeupTimerType
|-
| 10 13 ||[3.0.0+] CleanAllWakeupTimers|-| 14 || [6.0.0+]
|}
 
== EnableWakeupTimerOnDevice ==
No input, returns a total of 0x10-bytes of output. [3.0.0+] Now returns a total of 0xC-bytes of output.
= bpc:r =
This is "nn::bpc::IRtcManager".
 
This service no longer exists in [9.0.0+].
 
{| class="wikitable" border="1"
|-
! Cmd || Name
|-
| 0 || GetRtcTime
|-
| 1 || SetRtcTime
|-
| 2 || GetRtcResetDetected
|-
| 3 || [2.0.0+] ClearRtcResetDetected
|-
| 4 || [3.0.0+] SetUpRtcResetOnShutdown
|}
 
GetRtcTime / SetRtcTime directly accesses the max77620_rtc0 device.
= pcv =
This is "nn::pcv::detail::IPcvService".
 
{| class="wikitable" border="1"
|-
! Cmd || Name
|-
| [1.0.0-7.0.1] 0 || SetPowerEnabled
|-
| [1.0.0-7.0.1] 1 || SetClockEnabled
|-
| [1.0.0-7.0.1] 2 ||SetClockRate
|-
| [1.0.0-7.0.1] 3 ||GetClockRate
|-
| [1.0.0-7.0.1] 4 ||GetState
|-
| [1.0.0-7.0.1] 5 ||GetPossibleClockRates
|-
| [1.0.0-7.0.1] 6 ||SetMinVClockRate
|-
| [1.0.0-7.0.1] 7 || SetReset
|-
| [1.0.0-7.0.1] 8 ||SetVoltageEnabled
|-
| [1.0.0-7.0.1] 9 ||GetVoltageEnabled
|-
| [1.0.0-7.0.1] 10 ||GetVoltageRange
|-
| [1.0.0-7.0.1] 11 ||SetVoltageValue
|-
| [1.0.0-7.0.1] 12 ||GetVoltageValue
|-
| [1.0.0-7.0.1] 13 ||GetTemperatureThresholds
|-
| [1.0.0-7.0.1] 14 ||SetTemperature
|-
| [1.0.0-5.1.0] 15 ||Initialize
|-
| [1.0.0-5.1.0] 16 ||IsInitialized
|-
| [1.0.0-5.1.0] 17 ||Finalize
|-
| [3.0.0-7.0.1] 18 || PowerOn
|-
| [3.0.0-7.0.1] 19 || PowerOff
|-
| [3.0.0-7.0.1] 20 || ChangeVoltage
|-
| [3.0.0-7.0.1] 21 || GetPowerClockInfoEvent
|-
| [3.0.0-7.0.1] 22 || GetOscillatorClock
|-
| [3.0.0-7.0.1] 23 || GetDvfsTable
|-
| [3.0.0-7.0.1] 24 || GetModuleStateTable
|-
| [3.0.0-7.0.1] 25 || GetPowerDomainStateTable
|-
| 26 || [3.0.0+] GetFuseInfo
|-
| 27 || [5.0.0+] GetDramId
|-
| [6.0.0-7.0.1] 28 || [[#IsPoweredOn]]
|-
| [6.0.0-7.0.1] 29 || [[#GetVoltage]]
|}
 
[7.0.0+] The type-0xA output buffers were replaced with type-0x22 output buffers, for the following: GetDvfsTable, GetModuleStateTable, and GetPowerDomainStateTable.
 
== IsPoweredOn ==
Takes an u32 '''PowerControlTarget''' and returns a bool indicating the status of the requested [[#Voltage|voltage block]].
 
== GetVoltage ==
Takes an u32 '''PowerControlTarget''' and returns an u32 voltage value for the requested [[#Voltage|voltage block]].
 
== Modules ==
These are "nn::pcv::Module_X" where X is the power, clock and reset block name.
 
[8.0.0+] Every module name is now mapped to an ID.
 
=== Power Switch / Clocking / Reset ===
{| class="wikitable" border="1"
|-
! Name || ID || Block || Rail || Notes
|-
| 0 || 0x40000001 || CpuBus || vdd_cpu ||
|-
| 1 || 0x40000002 || GPU || vdd_gpu ||
|-
| 2 || 0x40000003 || I2S1 || vdd_soc ||
|-
| 3 || 0x40000004 || I2S2 || vdd_soc ||
|-
| 4 || 0x40000005 || I2S3 || vdd_soc ||
|-
| 5 || 0x40000006 || PWM || vdd_soc ||
|-
| 6 || 0x02000001 || I2C1 || vdd_soc ||
|-
| 7 || 0x02000002 || I2C2 || vdd_soc ||
|-
| 8 || 0x02000003 || I2C3 || vdd_soc ||
|-
| 9 || 0x02000004 || I2C4 || vdd_soc ||
|-
| 10 || 0x02000005 || I2C5 || vdd_soc ||
|-
| 11 || 0x02000006 || I2C6 || vdd_soc ||
|-
| 12 || 0x07000000 || SPI1 || vdd_soc ||
|-
| 13 || 0x07000001 || SPI2 || vdd_soc ||
|-
| 14 || 0x07000002 || SPI3 || vdd_soc ||
|-
| 15 || 0x07000003 || SPI4 || vdd_soc ||
|-
| 16 || 0x40000011 || DISP1 || vdd_soc ||
|-
| 17 || 0x40000012 || DISP2 || vdd_soc ||
|-
| 18 || 0x40000013 || ISP || - || Not an actual block. Used for debug.
|-
| 19 || 0x40000014 || VI || - || Not an actual block. Used for debug.
|-
| 20 || 0x40000015 || SDMMC1 || vdd_soc ||
|-
| 21 || 0x40000016 || SDMMC2 || vdd_soc ||
|-
| 22 || 0x40000017 || SDMMC3 || vdd_soc ||
|-
| 23 || 0x40000018 || SDMMC4 || vdd_soc ||
|-
| 24 || 0x40000019 || OWR || - || Not an actual block. Used for debug.
|-
| 25 || 0x4000001A || CSITE || vdd_soc ||
|-
| 26 || 0x4000001B || TSEC || vdd_soc ||
|-
| 27 || 0x4000001C || MSELECT || vdd_soc ||
|-
| 28 || 0x4000001D || HDA2CODEC_2X || vdd_soc ||
|-
| 29 || 0x4000001E || ACTMON || vdd_soc ||
|-
| 30 || 0x4000001F || I2C_SLOW || vdd_soc ||
|-
| 31 || 0x40000020 || SOR1 || vdd_soc ||
|-
| 32 || 0x40000021 || SATA || - || Not an actual block. Used for debug.
|-
| 33 || 0x40000022 || HDA || vdd_soc ||
|-
| 34 || 0x40000023 || XUSB_CORE_HOST || vdd_soc ||
|-
| 35 || 0x40000024 || XUSB_FALCON || vdd_soc ||
|-
| 36 || 0x40000025 || XUSB_FS || vdd_soc ||
|-
| 37 || 0x40000026 || XUSB_CORE_DEV || vdd_soc ||
|-
| 38 || 0x40000027 || XUSB_SS_HOSTDEV || vdd_soc ||
|-
| 39 || 0x03000001 || UARTA || vdd_soc ||
|-
| 40 || 0x35000405 || UARTB || vdd_soc ||
|-
| 41 || 0x3500040F || UARTC || vdd_soc ||
|-
| 42 || 0x37000001 || UARTD || vdd_soc ||
|-
| 43 || 0x4000002C || HOST1X || vdd_soc ||
|-
| 44 || 0x4000002D || ENTROPY || vdd_soc ||
|-
| 45 || 0x4000002E || SOC_THERM || vdd_soc ||
|-
| 46 || 0x4000002F || VIC || vdd_soc ||
|-
| 47 || 0x40000030 || NVENC || vdd_soc ||
|-
| 48 || 0x40000031 || NVJPG || vdd_soc ||
|-
| 49 || 0x40000032 || NVDEC || vdd_soc ||
|-
| 50 || 0x40000033 || QSPI || vdd_soc ||
|-
| 51 || 0x40000034 || VI_I2C || - || Not an actual block. Used for debug.
|-
| 52 || 0x40000035 || TSECB || vdd_soc ||
|-
| 53 || 0x40000036 || APE || vdd_soc ||
|-
| 54 || 0x40000037 || ACLK || vdd_soc ||
|-
| 55 || 0x40000038 || UARTAPE || vdd_soc ||
|-
| 56 || 0x40000039 || EMC || vdd_soc ||
|-
| 57 || 0x4000003A || PLLE0 || vdd_soc ||
|-
| 58 || 0x4000003B || PLLE0 || vdd_soc ||
|-
| 59 || 0x4000003C || DSI || vdd_soc ||
|-
| 60 || 0x4000003D || MAUD || vdd_soc ||
|-
| 61 || 0x4000003E || DPAUX1 || vdd_soc ||
|-
| 62 || 0x4000003F || MIPI_CAL || vdd_soc ||
|-
| 63 || 0x40000040 || UART_FST_MIPI_CAL || vdd_soc ||
|-
| 64 || 0x40000041 || OSC || vdd_soc ||
|-
| 65 || 0x40000042 || SCLK || vdd_soc ||
|-
| 66 || 0x40000043 || SOR_SAFE || vdd_soc ||
|-
| 67 || 0x40000044 || XUSB_SS || vdd_soc ||
|-
| 68 || 0x40000045 || XUSB_HOST || vdd_soc ||
|-
| 69 || 0x40000046 || XUSB_DEV || vdd_soc ||
|-
| 70 || 0x40000047 || EXTPERIPH1 || vdd_soc ||
|-
| 71 || 0x40000048 || AHUB || vdd_soc ||
|-
| 72 || 0x40000049 || HDA2HDMICODEC || vdd_soc ||
|-
| 73 || 0x4000004A || PLLP5 || vdd_soc ||
|-
| 74 || 0x4000004B || USBD || vdd_soc ||
|-
| 75 || 0x4000004C || USB2 || vdd_soc ||
|-
| 76 || 0x4000004D || PCIE || vdd_soc ||
|-
| 77 || 0x4000004E || AFI || vdd_soc ||
|-
| 78 || 0x4000004F || PCIEXCLK || vdd_soc ||
|-
| 79 || 0x40000050 || PEX_USB_UPHY || vdd_soc ||
|-
| 80 || 0x40000051 || XUSB_PADCTL || vdd_soc ||
|-
| 81 || 0x40000052 || APBDMA || vdd_soc ||
|-
| 82 || 0x40000053 || USB2_TRK || vdd_soc ||
|-
| 83 || 0x40000054 || PLLE0 || vdd_soc ||
|-
| 84 || 0x40000055 || PLLE0 || vdd_soc ||
|-
| 85 || 0x40000056 || CEC || vdd_soc ||
|-
| [6.0.0+] 86 || 0x40000057 || EXTPERIPH2 || vdd_soc ||
|}
 
=== Voltage ===
{| class="wikitable" border="1"
|-
! Name || Block || Notes
|-
| 0 || max77620_sd0 ||
|-
| 1 || max77620_sd1 ||
|-
| 2 || max77620_sd2 ||
|-
| 3 || max77620_sd3 ||
|-
| 4 || max77620_ldo0 || 1.2v
|-
| 5 || max77620_ldo1 ||
|-
| 6 || max77620_ldo2 || SDcard power, 1.8v - 3.3v
|-
| 7 || max77620_ldo3 || GC ASIC 3.1v
|-
| 8 || max77620_ldo4 || RTC power, 0.85v
|-
| 9 || max77620_ldo5 || GC ASIC 1.8v
|-
| 10 || max77620_ldo6 || AVDD touchscreen, 2.9v
|-
| 11 || max77620_ldo7 ||
|-
| 12 || max77620_ldo8 || DisplayPort, 1.05v
|-
| 13 || max77621_cpu ||
|-
| 14 || max77621_gpu ||
|-
| [6.0.0+] 15 || max77812_cpu ||
|-
| [6.0.0+] 16 || max77812_gpu ||
|-
| [6.0.0+] 17 || max77812_dram ||
|}
 
Note: max77620 GPIOs are only used internally by the driver during init, and not exposed via an API.
= pcv:arb =
This is "nn::pcv::IArbitrationManager".
 
This service no longer exists in [8.0.0+].
 
{| class="wikitable" border="1"
|-
! Cmd || Name
|-
| 0 || ReleaseControl
|}
 
= pcv:imm =
This is "nn::pcv::IImmediateManager".
 
This service no longer exists in [8.0.0+].
 
{| class="wikitable" border="1"
|-
! Cmd || Name
|-
| 0 || SetClockRate
|}
 
= clkrst, clkrst:i =
These are "nn::clkrst::IClkrstManager" and "nn::clkrst::IImmediateManager".
 
These were added with [8.0.0+].
 
{| class="wikitable" border="1"
|-
! Cmd || Name
|-
| 0 || [[#OpenSession]]
|-
| 1 || GetTemperatureThresholds
|-
| 2 || SetTemperature
|-
| 3 || GetPossibleClockRates
|-
| 4 || GetClockInfoEvent
|-
| 5 || GetClockModuleNumLimit
|}
 
== OpenSession ==
Takes an u32 '''ModuleID''', an u32 '''ModuleUnk''' and returns an [[#IClkrstSession]].
 
== GetClockModuleNumLimit ==
Returns 0x1A.
 
== IClkrstSession ==
This is "nn::clkrst::IClkrstSession".
 
{| class="wikitable" border="1"
|-
! Cmd || Name
|-
| 0 || SetClockEnabled
|-
| 1 || SetClockDisabled
|-
| 2 || SetResetAsserted
|-
| 3 || SetResetDeasserted
|-
| 4 || SetPowerEnabled
|-
| 5 || SetPowerDisabled
|-
| 6 || GetState
|-
| 7 || SetClockRate
|-
| 8 || GetClockRate
|-
| 9 || SetMinVClockRate
|-
| 10 || GetPossibleClockRates
|-
| 11 || GetDvfsTable
|}
 
= clkrst:a =
This is "nn::clkrst::IArbitrationManager".
 
This was added with [8.0.0+].
 
{| class="wikitable" border="1"
|-
! Cmd || Name
|-
| 0 || [[#ReleaseControl]]
|}
 
== ReleaseControl ==
Takes an u32 '''ModuleID'''. No output.
 
= rgltr =
This is "nn::regulator::IRegulatorManager".
 
This was added with [8.0.0+].
 
{| class="wikitable" border="1"
|-
! Cmd || Name
|-
| 0 || [[#OpenSession]]
|-
| 1 || GetPowerDomainStateTable
|-
| 2 || GetPowerInfoEvent
|-
| 3 || GetPowerModuleNumLimit
|}
 
== OpenSession ==
Takes an u32 '''ModuleID''' and returns an [[#IRegulatorSession]].
 
== GetPowerModuleNumLimit ==
Returns 0x3.
 
== IRegulatorSession ==
This is "nn::regulator::IRegulatorSession".
 
{| class="wikitable" border="1"
|-
! Cmd || Name
|-
| 0 ||[[#SetVoltageEnabled]]|-| 1 |||-| 2 || [[#GetVoltageEnabled]]|-| 3 || GetVoltageRange|-| 4 || GetVoltageValue
|-
| 5 || [[#SetVoltageValue]]
|-
| 6 || ChangeVoltage
|}
= pcv:imm == SetVoltageEnabled ===Takes a bool. Enables/disables the LDO this session was opened for. === GetVoltageEnabled ===Returns a bool. True if voltage is enabled, false if not. === SetVoltageValue ===Takes in a voltage in microvolts and sets the LDO to this voltage. = rtc =This was added with [8.0.0+]. 
{| class="wikitable" border="1"
|-
! Cmd || Name
|-
| 0 ||GetRtcTime
|-
| 1 || SetRtcTime
|-
| 2 || SetRtcClientUnknownBool
|-
| 3 || GetRtcResetDetected
|-
| 4 || ClearRtcResetDetected
|}
 
Commands 0, 1, 3, 4 call the same internal functions as bpc:r, except they take an extra u32 [[Bus_services#Known_Devices_2|device code]], where bpc:r hardcodes 0x3B000001 (max77620_rtc0).
 
Command 2 takes a u8 bool and a u32 device code; it opens an i2c session to the device code, and sets *(i2c_session_client_object + 0x38) = bool.
= time:u, time:a, time:s =
The following This is "nn::timesrv::detail::service::IStaticService". [9.0.0+] These services were moved to [[Glue_services|Glue]] and [[PSC_services|PSC]]. 
{| class="wikitable" border="1"
|-
|-
| 4 || GetStandardLocalSystemClock || Returns an [[#ISystemClock]].
|-
| 5 || [4.0.0+] GetEphemeralNetworkSystemClock || Returns an [[#ISystemClock]].
|-
| 20 || [6.0.0+] GetSharedMemoryNativeHandle ||
|-
| 30 || [6.0.0+] GetStandardNetworkClockOperationEventReadableHandle ||
|-
| 31 || [6.0.0+] GetEphemeralNetworkClockOperationEventReadableHandle ||
|-
| 50 || [4.0.0+] SetStandardSteadyClockInternalOffset ||
|-
| 100 || IsStandardUserSystemClockAutomaticCorrectionEnabled ||
| 101 || SetStandardUserSystemClockAutomaticCorrectionEnabled ||
|-
| 200 102 || IsStandardNetworkSystemClockAccuracySufficient [5.0.0+] GetStandardUserSystemClockInitialYear ||
|-
| 200 || [3.0.0+] IsStandardNetworkSystemClockAccuracySufficient ||
|-
| 201 || [6.0.0+] GetStandardUserSystemClockAutomaticCorrectionUpdatedTime ||
|-
| 300 || [4.0.0+] CalculateMonotonicSystemClockBaseTimePoint ||
|-
| 400 || [4.0.0+] GetClockSnapshot ||
|-
| 401 || [4.0.0+] GetClockSnapshotFromSystemClockContext ||
|-
| 500 || [4.0.0+] CalculateStandardUserSystemClockDifferenceByUser ||
|-
| 501 || [4.0.0+] CalculateSpanBetween ||
|}
== ISteadyClock ==This is "nn::timesrv::detail::service::ISteadyClock". 
{| class="wikitable" border="1"
|-
! Cmd || Name|| Notes|-| 0 || GetCurrentTimePoint || No input, returns an output [[#SteadyClockTimePoint]].|-| 2 || GetTestOffset || No input, returns an output [[#TimeSpanType]].|-| 3 || SetTestOffset || Takes an input [[#TimeSpanType]], no output.|-| 100 || [2.0.0+] GetRtcValue || No input, returns an output s64.|-| 101 || [2.0.0+] IsRtcResetDetected || No input, returns an output u8 bool.|-| 102 || [2.0.0+] GetSetupResultValue || No input, returns an output u32.|-| 200 || [3.0.0+] GetInternalOffset || No input, returns an output [[#TimeSpanType]].|-| 201 || [3.0.0-3.0.2] SetInternalOffset || Takes an input [[#TimeSpanType]], no output.|} === SteadyClockTimePoint ==={| class="wikitable" border="1"
|-
! Offset | 0 |Size | GetCurrentTimePoint| Description
|-
| 2 0x0 || GetTestOffset0x8|| A u64 representing a point in time.
|-
| 3 0x8 || SetTestOffset0x10 || An ID representing the clock source.|} This is a 0x18-byte struct. === TimeSpanType ===This is an u64. == ISystemClock ==This is "nn::timesrv::detail::service::ISystemClock". {| class="wikitable" border="1"
|-
! Cmd | 100 |Name | GetRtcValue| Notes
|-
| 101 0 || IsRtcResetDetectedGetCurrentTime || Returns an output [[#PosixTime]].
|-
| 102 1 || GetSetupResultValueSetCurrentTime || Takes an input [[#PosixTime]].
|-
| 200 2 || GetInternalOffsetGetSystemClockContext || Returns an output [[#SystemClockContext]].
|-
| 201 3 || SetInternalOffsetSetSystemClockContext || Takes an input [[#SystemClockContext]].
|-
| 4 || [9.0.0+] GetOperationEventReadableHandle ||
|}
= ISystemClock == PosixTime ===This is an s64 for UTC POSIX time. === SystemClockContext ===This is an 0x20-byte struct. {| class="wikitable" border="1"|-! Offset || Size || Description|-| 0x0 || 0x8|| a [[#PosixTime]] representing the system clock epoch.|-| 0x8 || 0x18 || a [[#SteadyClockTimePoint]]|} == ITimeZoneService ==This is "nn::timesrv::detail::service::ITimeZoneService". 
{| class="wikitable" border="1"
|-
! Cmd || Name || Notes
|-
| 0 || GetCurrentTime GetDeviceLocationName || Returns No input, returns an nnoutput [[#LocationName]].|-| 1 || SetDeviceLocationName || Takes an input [[#LocationName]], no output.|-| 2 || GetTotalLocationNameCount || No input, returns an output s32.|-| 3 || LoadLocationNameList || |-| 4 || LoadTimeZoneRule || Takes an input [[#LocationName]] and a type-0x16 output buffer for [[#TimeZoneRule]], no output.|-| 5 || [2.0.0+] GetTimeZoneRuleVersion || No input, returns an output [[#TimeZoneRuleVersion]].|-| 6 || [5.0.0+] GetDeviceLocationNameAndUpdatedTime || |-| 100 || ToCalendarTime || Takes an input [[#PosixTime]] and a type-0x15 input buffer for [[#TimeZoneRule]], returns an output [[#CalendarTime]] and [[#CalendarAdditionalInfo]].|-| 101 || ToCalendarTimeWithMyRule || Takes an input [[#PosixTime]], returns an output [[#CalendarTime]] and [[#CalendarAdditionalInfo]].|-| 201 || ToPosixTime || Takes an input [[#CalendarTime]], a type-0x15 input buffer for [[#TimeZoneRule]], an type-0xA output buffer for [[#PosixTime]] array, and returns an output s32.|-| 202 || ToPosixTimeWithMyRule || Takes an input [[#CalendarTime]], an type-0xA output buffer for [[#PosixTime]] array, and returns an output s32.|} === LoadLocationNameList ===Takes an input s32 LocationName_index and a type-0x6 output buffer for [[#LocationName]], returns an output s32 for total output entries. === LocationName ===This contains a TimeZone location string with a max size of 0x24 bytes. === TimeZoneRule ===This is an 0x4000-byte struct. Official sw uses fixed-size 0x4000 for the buffer size with the above commands. This is loaded from the [[Title_list|TimeZoneBinary]] title with the specified LocationName under the zoneinfo/ directory, the content is then converted into this TimeZoneRule structure. The files contained under zoneinfo/ directory are Tzif2 files without Tzif1 header and data at the begining of them (see [https://tools.ietf.org/html/rfc8536 RFC8536] for more information). The conversion of a Tzif2 file to a TimeZoneRule structure is based on [https:time::PosixTime //github.com/eggert/tz/blob/master/localtime.c tz database code] with some custom modifications (Leap seconds aren't handled, no usage of "posixrules" and Tzif1 support stripped out). {| class="wikitable" border="1"|-! Offset || Size || Description|-| 0x0 || 0x4 || timecnt|-| 0x4 || 0x4 || typecnt|-| 0x8 || 0x4 || charcnt|-| 0xC || 0x1 || goback|-| 0xD || 0x1 || goahead|-| 0xE || 0x2 || Padding|-| 0x10 || 0x8 * 1000 || ats|-| 0x1f50 || 0x1 * 1000 || types|-| 0x2338 || 0x10 * 128 || ttis (time since epochtype information), struct ttinfo[1000]|-| 0x2b38 || 0x1 * 512 || chars|-| 0x2d38 || 0x4 || defaulttype|-| 0x2d3c || 0x12c4 || Reserved / Unused|} === ttinfo ===This is an 0x10-byte struct.Represent a Time Type Information used in [[#TimeZoneRule]]. {| class="wikitable" border="1"|-! Offset || Size || Description|-| 0x0 || 0x4 || tt_gmtoff|-| 0x4 || 0x1 || tt_isdst|-| 0x5 || 0x3 || Padding|-| 0x8 || 0x4 || tt_abbrind|-| 0xC || 0x1 || tt_ttisstd|-| 0xD || 0x1 || tt_ttisgmt|-| 0xE || 0x2 || Padding|} === TimeZoneRuleVersion ===This is an u128. === CalendarTime ==={| class="wikitable" border="1"|-! Offset || Size || Description|-| 0x0 || 0x2 || Year|-| 0x2 || 0x1 || Month|-| 0x3 || 0x1 || Day|-| 0x4 || 0x1 || Hour|-| 0x5 || 0x1 || Minute|-| 0x6 || 0x1 || Second|-| 0x7 || 0x1 || Padding / unknown?|} This is an 0x8-byte struct. === CalendarAdditionalInfo ==={| class="wikitable" border="1"|-! Offset || Size || Description|-| 0x0 || 0x4 || 0-based day-of-week.
|-
| 1 0x4 || SetCurrentTime 0x4 || Takes an nn::time::PosixTime0-based day-of-year.
|-
| 2 0x8 || GetSystemClockContext 0x8 || Returns an 0x20 byte struct (nn::time::SystemClockContext)Timezone name string.
|-
| 3 0x10 || SetSystemClockContext 0x4 || Takes an nn::time::SystemClockContext0 = no DST, 1 = DST.
|-
| 0x14 || 0x4 || s32 seconds relative to UTC for this timezone.
|}
This is an 0x18-byte struct. This stores timezone info.
= ITimeZoneService =[[Category:Services]]
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