--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SDL3/SDL_time.h	Mon Jan 05 02:15:46 2026 -0500
@@ -0,0 +1,231 @@
+/*
+Simple DirectMedia Layer
+Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+This software is provided 'as-is', without any express or implied
+warranty.  In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not
+   claim that you wrote the original software. If you use this software
+   in a product, an acknowledgment in the product documentation would be
+   appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be
+   misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef SDL_time_h_
+#define SDL_time_h_
+
+/**
+ * # CategoryTime
+ *
+ * SDL realtime clock and date/time routines.
+ *
+ * There are two data types that are used in this category: SDL_Time, which
+ * represents the nanoseconds since a specific moment (an "epoch"), and
+ * SDL_DateTime, which breaks time down into human-understandable components:
+ * years, months, days, hours, etc.
+ *
+ * Much of the functionality is involved in converting those two types to
+ * other useful forms.
+ */
+
+#include <SDL3/SDL_error.h>
+#include <SDL3/SDL_stdinc.h>
+
+#include <SDL3/SDL_begin_code.h>
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * A structure holding a calendar date and time broken down into its
+ * components.
+ *
+ * \since This struct is available since SDL 3.2.0.
+ */
+typedef struct SDL_DateTime
+{
+    int year;                  /**< Year */
+    int month;                 /**< Month [01-12] */
+    int day;                   /**< Day of the month [01-31] */
+    int hour;                  /**< Hour [0-23] */
+    int minute;                /**< Minute [0-59] */
+    int second;                /**< Seconds [0-60] */
+    int nanosecond;            /**< Nanoseconds [0-999999999] */
+    int day_of_week;           /**< Day of the week [0-6] (0 being Sunday) */
+    int utc_offset;            /**< Seconds east of UTC */
+} SDL_DateTime;
+
+/**
+ * The preferred date format of the current system locale.
+ *
+ * \since This enum is available since SDL 3.2.0.
+ *
+ * \sa SDL_GetDateTimeLocalePreferences
+ */
+typedef enum SDL_DateFormat
+{
+    SDL_DATE_FORMAT_YYYYMMDD = 0, /**< Year/Month/Day */
+    SDL_DATE_FORMAT_DDMMYYYY = 1, /**< Day/Month/Year */
+    SDL_DATE_FORMAT_MMDDYYYY = 2  /**< Month/Day/Year */
+} SDL_DateFormat;
+
+/**
+ * The preferred time format of the current system locale.
+ *
+ * \since This enum is available since SDL 3.2.0.
+ *
+ * \sa SDL_GetDateTimeLocalePreferences
+ */
+typedef enum SDL_TimeFormat
+{
+    SDL_TIME_FORMAT_24HR = 0, /**< 24 hour time */
+    SDL_TIME_FORMAT_12HR = 1  /**< 12 hour time */
+} SDL_TimeFormat;
+
+/**
+ * Gets the current preferred date and time format for the system locale.
+ *
+ * This might be a "slow" call that has to query the operating system. It's
+ * best to ask for this once and save the results. However, the preferred
+ * formats can change, usually because the user has changed a system
+ * preference outside of your program.
+ *
+ * \param dateFormat a pointer to the SDL_DateFormat to hold the returned date
+ *                   format, may be NULL.
+ * \param timeFormat a pointer to the SDL_TimeFormat to hold the returned time
+ *                   format, may be NULL.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_GetDateTimeLocalePreferences(SDL_DateFormat *dateFormat, SDL_TimeFormat *timeFormat);
+
+/**
+ * Gets the current value of the system realtime clock in nanoseconds since
+ * Jan 1, 1970 in Universal Coordinated Time (UTC).
+ *
+ * \param ticks the SDL_Time to hold the returned tick count.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_GetCurrentTime(SDL_Time *ticks);
+
+/**
+ * Converts an SDL_Time in nanoseconds since the epoch to a calendar time in
+ * the SDL_DateTime format.
+ *
+ * \param ticks the SDL_Time to be converted.
+ * \param dt the resulting SDL_DateTime.
+ * \param localTime the resulting SDL_DateTime will be expressed in local time
+ *                  if true, otherwise it will be in Universal Coordinated
+ *                  Time (UTC).
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_TimeToDateTime(SDL_Time ticks, SDL_DateTime *dt, bool localTime);
+
+/**
+ * Converts a calendar time to an SDL_Time in nanoseconds since the epoch.
+ *
+ * This function ignores the day_of_week member of the SDL_DateTime struct, so
+ * it may remain unset.
+ *
+ * \param dt the source SDL_DateTime.
+ * \param ticks the resulting SDL_Time.
+ * \returns true on success or false on failure; call SDL_GetError() for more
+ *          information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_DateTimeToTime(const SDL_DateTime *dt, SDL_Time *ticks);
+
+/**
+ * Converts an SDL time into a Windows FILETIME (100-nanosecond intervals
+ * since January 1, 1601).
+ *
+ * This function fills in the two 32-bit values of the FILETIME structure.
+ *
+ * \param ticks the time to convert.
+ * \param dwLowDateTime a pointer filled in with the low portion of the
+ *                      Windows FILETIME value.
+ * \param dwHighDateTime a pointer filled in with the high portion of the
+ *                       Windows FILETIME value.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC void SDLCALL SDL_TimeToWindows(SDL_Time ticks, Uint32 *dwLowDateTime, Uint32 *dwHighDateTime);
+
+/**
+ * Converts a Windows FILETIME (100-nanosecond intervals since January 1,
+ * 1601) to an SDL time.
+ *
+ * This function takes the two 32-bit values of the FILETIME structure as
+ * parameters.
+ *
+ * \param dwLowDateTime the low portion of the Windows FILETIME value.
+ * \param dwHighDateTime the high portion of the Windows FILETIME value.
+ * \returns the converted SDL time.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC SDL_Time SDLCALL SDL_TimeFromWindows(Uint32 dwLowDateTime, Uint32 dwHighDateTime);
+
+/**
+ * Get the number of days in a month for a given year.
+ *
+ * \param year the year.
+ * \param month the month [1-12].
+ * \returns the number of days in the requested month or -1 on failure; call
+ *          SDL_GetError() for more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC int SDLCALL SDL_GetDaysInMonth(int year, int month);
+
+/**
+ * Get the day of year for a calendar date.
+ *
+ * \param year the year component of the date.
+ * \param month the month component of the date.
+ * \param day the day component of the date.
+ * \returns the day of year [0-365] if the date is valid or -1 on failure;
+ *          call SDL_GetError() for more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC int SDLCALL SDL_GetDayOfYear(int year, int month, int day);
+
+/**
+ * Get the day of week for a calendar date.
+ *
+ * \param year the year component of the date.
+ * \param month the month component of the date.
+ * \param day the day component of the date.
+ * \returns a value between 0 and 6 (0 being Sunday) if the date is valid or
+ *          -1 on failure; call SDL_GetError() for more information.
+ *
+ * \since This function is available since SDL 3.2.0.
+ */
+extern SDL_DECLSPEC int SDLCALL SDL_GetDayOfWeek(int year, int month, int day);
+
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+}
+#endif
+#include <SDL3/SDL_close_code.h>
+
+#endif /* SDL_time_h_ */