Visiting graveyards when fasting

There is no reason not to visit graveyards whilst fasting. The Prophet (peace
and blessings of Allaah be upon him) said, “but now visit them (graveyards).” The apparent meaning of this hadeeth is that it is general with
regard to time. 

It was narrated that Abu Hurayrah said: The Messenger of Allaah (peace and
blessings of Allaah be upon him) said to his companions, “Who among you is fasting today?” Abu Bakr said, “I am.” He said, “Who among you has
attended a funeral?” Abu Bakr said, “I have.” He said, “Is there anyone among you who has visited a sick person?” Abu Bakr said, “I have.” He
said, “Is there anyone among you who has given charity?” Abu Bakr said, “I have.” He said, “(These qualities) are not combined in a man but he
will enter Paradise.” Narrated by Muslim. 

And Allaah knows best.