from datetime import datetime, timedelta
while True:
dt_parsed = datetime.strptime("13:19:40", "%H:%M:%S")
t_begin = dt_parsed.time()
dt_end = dt_parsed + timedelta(microseconds=200)
t_end = dt_end.time()
t_now =
datetime.now().time()
if t_begin <= t_now < t_end:
print("Привет")