Complex sentence: This gives a miscellaneous diurnal time for the NOTAM if the hours of effect are less than 24 hours a day, e.g. parachute dropping exercises tend to occur for short periods of a few hours during the day, but may be repeated over many days.
Split into simpler sentences: This gives a miscellaneous diurnal time for the NOTAM if the hours of effect are less than 24 hours a day. E.g. parachute dropping exercises tend to occur for short periods of a few hours during the day, but may be repeated over many days.