def GetTKelvinFromTCelsius(TCelsius: float) -> float:
    """
    Utility function to convert temperature to Kelvin (K)
    given temperature in degree Celsius (°C).

    Args:
        TCelsius: Temperature in degree Celsius (°C)

    Returns:
        Temperature in Kelvin (K)

    Notes:
        Exact conversion.

    """
    # Zero degree Celsius (°C) expressed as Kelvin (K)
    ZERO_CELSIUS_AS_KELVIN = 273.15

    TKelvin = TCelsius + ZERO_CELSIUS_AS_KELVIN
    return TKelvin