diff --git a/README.md b/README.md
index fa0237d..b92c209 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,6 @@
 # OpenBootCampPython
 Repository to store Python boot camp.
+
+Ejercicio 7.B: En este segundo ejercicios tendréis que crear un script que nos diga si es la hora de ir a casa. Tendréis que hacer uso del modulo time. Necesitaréis la fecha del sistema y poder comprobar la hora.
+
+En el caso de que sean más de las 7, se mostrará un mensaje y en caso contrario, haréis una operación para calcular el tiempo que queda de trabajo.
diff --git a/src/exerciseseven/ishometime.py b/src/exerciseseven/ishometime.py
new file mode 100644
index 0000000..2cf7194
--- /dev/null
+++ b/src/exerciseseven/ishometime.py
@@ -0,0 +1,77 @@
+# IMPORT
+from time import localtime, time, sleep
+
+# CONSTANT
+ENDWORK = (19, 0, 0)  # End work time
+WORKTIME = 8  # Work hours
+
+
+# FUNCTION
+def diffTime(actual: list, end: tuple) -> int:
+    """Calculate substraction between two times in seconds
+    :param end: end time in format Hours, Minutes, Seconds
+    :type end: tuple
+    :param actual: start time in format Hours, Minutes, Seconds
+    :type actual: tuple
+    :return: substraction of end time and start time in hours
+    :rtype: int
+    """
+    diff = 0
+    diff += end[2] - actual[2]
+    diff += (end[1] - actual[1]) * 60
+    diff += (end[0] - actual[0]) * (60 * 60)
+    return diff
+
+
+def toTimeFormat(sec: int) -> list:
+    """Transform seconds in format Hours, Minutes, Seconds
+    :param sec: seconds to transform
+    :type sec: int
+    :return: secos transformed in format Hours, Minutes, Seconds
+    :rtype: list
+    """
+    horas = sec // (60 * 60)
+    minutos = (sec // 60) - (horas * 60)
+    segundos = sec - (horas * 60 * 60) - (minutos * 60)
+    return [horas, minutos, segundos]
+
+
+def showTime(t: list):
+    """Show in terminal the time in format 'Faltan HH hora(s) mm minuto(s) ss segundo(s)
+    every second
+    :param t: time to show in format (HH, mm, ss)
+    :type t: list
+    :return: None
+    :rtype: NoneType
+    """
+    msg = 'Faltan '
+    msg += '0' + str(t[0]) if t[0] < 10 else str(t[0])
+    msg += ' hora ' if t[0] == 1 else ' horas '
+    msg += '0' + str(t[1]) if t[1] < 10 else str(t[1])
+    msg += ' minuto ' if t[1] == 1 else ' minutos '
+    msg += '0' + str(t[2]) if t[2] < 10 else str(t[2])
+    msg += ' segundo ' if t[2] == 1 else ' segundos '
+    print(msg, end='\r')
+    sleep(1)
+
+
+def isHomeTime():
+    """Function calculate the time left until work end show it every second
+    :return: None
+    :rtype: NoneType
+    """
+    actual = list(localtime(time())[3:6])  # Current time in (HH, mm, ss)
+    diff = diffTime(actual, ENDWORK)
+    left = toTimeFormat(diff)
+    if 0 == left[0] and (left[1] > 0 or left[2] > 0):
+        showTime(left)
+        return False
+    elif ENDWORK[0] - WORKTIME == left[0] and left[1] == 0 and left[2] == 0:
+        showTime(left)
+        return False
+    elif 0 < left[0] < ENDWORK[0] - WORKTIME:
+        showTime(left)
+        return False
+    else:
+        print('Hora de ir a casa', end='\r')
+        return True
diff --git a/src/main.py b/src/main.py
index a47b6a3..4dfed75 100644
--- a/src/main.py
+++ b/src/main.py
@@ -1,9 +1,17 @@
+from time import sleep
+
+
+from exerciseseven.ishometime import isHomeTime
+
+
 def main():
-    """Main script for pythonBootCamp project
+    """Main script for exercise seven B
     :return: None
     :rtype: NoneType
     """
-    pass
+    home = False
+    while not home:
+        home = isHomeTime()
 
 
 if __name__ == '__main__':