diff --git a/esphome/core/time.h b/esphome/core/time.h
index 0d47ce820b..13a0127156 100644
--- a/esphome/core/time.h
+++ b/esphome/core/time.h
@@ -44,32 +44,14 @@ struct ESPTime {
   size_t strftime(char *buffer, size_t buffer_len, const char *format);
 
   /** Convert this ESPTime struct to a string as specified by the format argument.
-   * @see https://www.gnu.org/software/libc/manual/html_node/Formatting-Calendar-Time.html#index-strftime
+   * @see https://en.cppreference.com/w/c/chrono/strftime
    *
-   * @warning This method uses dynamically allocated strings which can cause heap fragmentation with some
-   * microcontrollers.
-   *
-   * @warning This method can return "ERROR" when the underlying strftime() call fails, e.g. when the
-   * format string contains unsupported specifiers or when the format string doesn't produce any
-   * output.
+   * @warning This method can return "ERROR" when the underlying strftime() call fails or when the
+   * output exceeds 128 bytes.
    */
   std::string strftime(const std::string &format);
 
-  /** Convert this ESPTime struct to a string as specified by the format argument.
-   * @see https://www.gnu.org/software/libc/manual/html_node/Formatting-Calendar-Time.html#index-strftime
-   *
-   * This overload is optimized for string literals and avoids std::string parameter overhead.
-   *
-   * @param format The format string (null-terminated C string)
-   * @param format_len Optional length of the format string. If 0 (default), strlen() will be called.
-   *
-   * @warning This method uses dynamically allocated strings which can cause heap fragmentation with some
-   * microcontrollers.
-   *
-   * @warning This method can return "ERROR" when the underlying strftime() call fails, e.g. when the
-   * format string contains unsupported specifiers or when the format string doesn't produce any
-   * output.
-   */
+  /// @copydoc strftime(const std::string &format)
   std::string strftime(const char *format, size_t format_len = 0);
 
   /// Check if this ESPTime is valid (all fields in range and year is greater than 2018)